diff --git a/rdmo/core/assets/js/components/Modal.js b/rdmo/core/assets/js/components/Modal.js
index 22c07abeab..2ef42a543b 100644
--- a/rdmo/core/assets/js/components/Modal.js
+++ b/rdmo/core/assets/js/components/Modal.js
@@ -8,9 +8,13 @@ const Modal = ({ title, show, modalProps, submitLabel, submitProps, onClose, onS
       <BootstrapModal.Header closeButton>
         <h2 className="modal-title">{title}</h2>
       </BootstrapModal.Header>
-      <BootstrapModal.Body>
-        { children }
-      </BootstrapModal.Body>
+      {
+        children && (
+          <BootstrapModal.Body>
+            { children }
+          </BootstrapModal.Body>
+        )
+      }
       <BootstrapModal.Footer>
         <button type="button" className="btn btn-default" onClick={onClose}>
           {gettext('Close')}
diff --git a/rdmo/projects/assets/js/interview/actions/actionTypes.js b/rdmo/projects/assets/js/interview/actions/actionTypes.js
index d8025bf3ad..b42995cdbf 100644
--- a/rdmo/projects/assets/js/interview/actions/actionTypes.js
+++ b/rdmo/projects/assets/js/interview/actions/actionTypes.js
@@ -50,3 +50,7 @@ export const CREATE_SET = 'CREATE_SET'
 export const DELETE_SET_INIT = 'DELETE_SET_INIT'
 export const DELETE_SET_SUCCESS = 'DELETE_SET_SUCCESS'
 export const DELETE_SET_ERROR = 'DELETE_SET_ERROR'
+
+export const COPY_SET_INIT = 'COPY_SET_INIT'
+export const COPY_SET_SUCCESS = 'COPY_SET_SUCCESS'
+export const COPY_SET_ERROR = 'COPY_SET_ERROR'
diff --git a/rdmo/projects/assets/js/interview/actions/interviewActions.js b/rdmo/projects/assets/js/interview/actions/interviewActions.js
index bf8bce4898..e55aa275a6 100644
--- a/rdmo/projects/assets/js/interview/actions/interviewActions.js
+++ b/rdmo/projects/assets/js/interview/actions/interviewActions.js
@@ -1,4 +1,4 @@
-import { isEmpty, isNil } from 'lodash'
+import { first, isEmpty, isNil } from 'lodash'
 
 import PageApi from '../api/PageApi'
 import ProjectApi from '../api/ProjectApi'
@@ -47,7 +47,10 @@ import {
   CREATE_SET,
   DELETE_SET_INIT,
   DELETE_SET_SUCCESS,
-  DELETE_SET_ERROR
+  DELETE_SET_ERROR,
+  COPY_SET_INIT,
+  COPY_SET_SUCCESS,
+  COPY_SET_ERROR
 } from './actionTypes'
 
 import { updateConfig } from 'rdmo/core/assets/js/actions/configActions'
@@ -363,26 +366,73 @@ export function updateValue(value, attrs, store = true) {
   }
 }
 
-export function copyValue(value) {
+export function copyValue(...originalValues) {
+  const firstValue = first(originalValues)
+  const pendingId = `copyValue/${firstValue.attribute}/${firstValue.set_prefix}/${firstValue.set_index}`
+
   return (dispatch, getState) => {
-    const sets = getState().interview.sets
-    const values = getState().interview.values
-
-    sets.filter((set) => (
-      (set.set_prefix == value.set_prefix) &&
-      (set.set_index != value.set_index)
-    )).forEach((set) => {
-      const sibling = values.find((v) => (
-        (v.attribute == value.attribute) &&
-        (v.set_prefix == set.set_prefix) &&
-        (v.set_index == set.set_index) &&
-        (v.collection_index == value.collection_index)
-      ))
-
-      if (isNil(sibling)) {
-        dispatch(storeValue(ValueFactory.create({ ...value, set_index: set.set_index })))
-      } else if (isEmptyValue(sibling)) {
-        dispatch(storeValue(ValueFactory.update(sibling, value)))
+    dispatch(addToPending(pendingId))
+
+    const { sets, values } = getState().interview
+
+    // create copies for each value for all it's empty siblings
+    const copies = originalValues.reduce((copies, value) => {
+      return [
+        ...copies,
+        ...sets.filter((set) => (
+          (set.set_prefix == value.set_prefix) &&
+          (set.set_index != value.set_index)
+        )).map((set) => {
+          const siblingIndex = values.findIndex((v) => (
+            (v.attribute == value.attribute) &&
+            (v.set_prefix == set.set_prefix) &&
+            (v.set_index == set.set_index) &&
+            (v.collection_index == value.collection_index)
+          ))
+
+          const sibling = siblingIndex > 0 ? values[siblingIndex] : null
+
+          if (isNil(sibling)) {
+            return [ValueFactory.create({ ...value, set_index: set.set_index }), siblingIndex]
+          } else if (isEmptyValue(sibling)) {
+            // the spread operator { ...sibling } does prevent an update in place
+            return [ValueFactory.update({ ...sibling }, value), siblingIndex]
+          } else {
+            return null
+          }
+        }).filter((value) => !isNil(value))
+      ]
+    }, [])
+
+    // dispatch storeValueInit for each of the updated values,
+    // created values have valueIndex -1 and will be skipped
+    // eslint-disable-next-line no-unused-vars
+    copies.forEach(([value, valueIndex]) => dispatch(storeValueInit(valueIndex)))
+
+    // loop over all copies and store the values on the server
+    // afterwards fetchNavigation, updateProgress and check refresh once
+    return Promise.all(
+      copies.map(([value, valueIndex]) => {
+        return ValueApi.storeValue(projectId, value)
+          .then((value) => dispatch(storeValueSuccess(value, valueIndex)))
+      })
+    ).then(() => {
+      dispatch(removeFromPending(pendingId))
+
+      const page = getState().interview.page
+      const sets = getState().interview.sets
+      const question = page.questions.find((question) => question.attribute === firstValue.attribute)
+      const refresh = question && question.optionsets.some((optionset) => optionset.has_refresh)
+
+      dispatch(fetchNavigation(page))
+      dispatch(updateProgress())
+
+      if (refresh) {
+        // if the refresh flag is set, reload all values for the page,
+        // resolveConditions will be called in fetchValues
+        dispatch(fetchValues(page))
+      } else {
+        dispatch(resolveConditions(page, sets))
       }
     })
   }
@@ -459,8 +509,8 @@ export function createSet(attrs) {
     // create a value for the text if the page has an attribute
     const value = isNil(attrs.attribute) ? null : ValueFactory.create(attrs)
 
-    // create an action to be called immediately or after saving the value
-    const createSetSuccess = (value) => {
+    // create a callback function to be called immediately or after saving the value
+    const createSetCallback = (value) => {
       dispatch(activateSet(set))
 
       const state = getState().interview
@@ -476,12 +526,12 @@ export function createSet(attrs) {
     }
 
     if (isNil(value)) {
-      return createSetSuccess()
+      return createSetCallback()
     } else {
       return dispatch(storeValue(value)).then(() => {
         const storedValue = getState().interview.values.find((v) => compareValues(v, value))
         if (!isNil(storedValue)) {
-          createSetSuccess(storedValue)
+          createSetCallback(storedValue)
         }
       })
     }
@@ -524,10 +574,11 @@ export function deleteSet(set, setValue) {
 
           if (sets.length > 1) {
             const index = sets.indexOf(set)
-            if (index > 0) {
+            if (index < sets.length - 1) {
+              dispatch(activateSet(sets[index + 1]))
+            } else {
+              // If it's the last set, activate the new last set
               dispatch(activateSet(sets[index - 1]))
-            } else if (index == 0) {
-              dispatch(activateSet(sets[1]))
             }
           }
 
@@ -559,3 +610,84 @@ export function deleteSetSuccess(set) {
 export function deleteSetError(errors) {
   return {type: DELETE_SET_ERROR, errors}
 }
+
+export function copySet(currentSet, currentSetValue, attrs) {
+  const pendingId = `copySet/${currentSet.set_prefix}/${currentSet.set_index}`
+
+  return (dispatch, getState) => {
+    dispatch(addToPending(pendingId))
+    dispatch(copySetInit())
+
+    // create a new set
+    const set = SetFactory.create(attrs)
+
+    // create a value for the text if the page has an attribute
+    const value = isNil(attrs.attribute) ? null : ValueFactory.create(attrs)
+
+    // create a callback function to be called immediately or after saving the value
+    const copySetCallback = (setValues) => {
+      dispatch(activateSet(set))
+
+      const state = getState().interview
+
+      const page = state.page
+      const values = [...state.values, ...setValues]
+      const sets = gatherSets(values)
+
+      initSets(sets, page)
+      initValues(sets, values, page)
+
+      return dispatch({type: COPY_SET_SUCCESS, values, sets})
+    }
+
+    let promise
+    if (isNil(value)) {
+      // gather all values for the currentSet and it's descendants
+      const currentValues = getDescendants(getState().interview.values, currentSet)
+
+      // store each value in currentSet with the new set_index
+      promise = Promise.all(
+        currentValues.filter((currentValue) => !isEmptyValue(currentValue)).map((currentValue) => {
+          const value = {...currentValue}
+          const setPrefixLength = isEmpty(set.set_prefix) ? 0 : set.set_prefix.split('|').length
+
+          if (value.set_prefix == set.set_prefix) {
+            value.set_index = set.set_index
+          } else {
+            value.set_prefix = value.set_prefix.split('|').map((sp, idx) => {
+              // for the set_prefix of the new value, set the number at the position, which is one more
+              // than the length of the set_prefix of the new (and old) set, to the set_index of the new set.
+              // since idx counts from 0, this equals setPrefixLength
+              return (idx == setPrefixLength) ? set.set_index : sp
+            }).join('|')
+          }
+
+          delete value.id
+          return ValueApi.storeValue(projectId, value)
+        })
+      )
+    } else {
+      promise = ValueApi.copySet(projectId, currentSetValue, value)
+    }
+
+    return promise.then((values) => {
+      dispatch(removeFromPending(pendingId))
+      dispatch(copySetCallback(values))
+    }).catch((errors) => {
+      dispatch(removeFromPending(pendingId))
+      dispatch(copySetError(errors))
+    })
+  }
+}
+
+export function copySetInit() {
+  return {type: COPY_SET_INIT}
+}
+
+export function copySetSuccess(values, sets) {
+  return {type: COPY_SET_SUCCESS, values, sets}
+}
+
+export function copySetError(errors) {
+  return {type: COPY_SET_ERROR, errors}
+}
diff --git a/rdmo/projects/assets/js/interview/api/ValueApi.js b/rdmo/projects/assets/js/interview/api/ValueApi.js
index 208bbca611..b925e5acac 100644
--- a/rdmo/projects/assets/js/interview/api/ValueApi.js
+++ b/rdmo/projects/assets/js/interview/api/ValueApi.js
@@ -29,8 +29,12 @@ class ValueApi extends BaseApi {
     }
   }
 
-  static deleteSet(projectId, value) {
-    return this.delete(`/api/v1/projects/projects/${projectId}/values/${value.id}/set/`)
+  static copySet(projectId, currentSetValue, setValue) {
+    return this.post(`/api/v1/projects/projects/${projectId}/values/${currentSetValue.id}/set/`, setValue)
+  }
+
+  static deleteSet(projectId, setValue) {
+    return this.delete(`/api/v1/projects/projects/${projectId}/values/${setValue.id}/set/`)
   }
 
 }
diff --git a/rdmo/projects/assets/js/interview/components/main/page/Page.js b/rdmo/projects/assets/js/interview/components/main/page/Page.js
index 56bc9eba84..b99953367f 100644
--- a/rdmo/projects/assets/js/interview/components/main/page/Page.js
+++ b/rdmo/projects/assets/js/interview/components/main/page/Page.js
@@ -13,12 +13,17 @@ import PageHead from './PageHead'
 
 const Page = ({ config, templates, overview, page, sets, values, fetchPage,
                 createValue, updateValue, deleteValue, copyValue,
-                activateSet, createSet, updateSet, deleteSet }) => {
+                activateSet, createSet, updateSet, deleteSet, copySet }) => {
 
   const currentSetPrefix = ''
-  const currentSetIndex = page.is_collection ? get(config, 'page.currentSetIndex', 0) : 0
-  const currentSet = sets.find((set) => (set.set_prefix == currentSetPrefix && set.set_index == currentSetIndex)) ||
-                     sets.find((set) => (set.set_prefix == currentSetPrefix && set.set_index == 0))  // sanity check
+  let currentSetIndex = page.is_collection ? get(config, 'page.currentSetIndex', 0) : 0
+  let currentSet = sets.find((set) => (set.set_prefix == currentSetPrefix && set.set_index == currentSetIndex))
+
+  // sanity check
+  if (isNil(currentSet)) {
+    currentSetIndex = 0
+    currentSet = sets.find((set) => (set.set_prefix == currentSetPrefix && set.set_index == 0))
+  }
 
   const isManager = (overview.is_superuser || overview.is_editor || overview.is_reviewer)
 
@@ -36,6 +41,7 @@ const Page = ({ config, templates, overview, page, sets, values, fetchPage,
         createSet={createSet}
         updateSet={updateSet}
         deleteSet={deleteSet}
+        copySet={copySet}
       />
       <div className="row">
         {
@@ -55,6 +61,7 @@ const Page = ({ config, templates, overview, page, sets, values, fetchPage,
                     createSet={createSet}
                     updateSet={updateSet}
                     deleteSet={deleteSet}
+                    copySet={copySet}
                     createValue={createValue}
                     updateValue={updateValue}
                     deleteValue={deleteValue}
@@ -111,11 +118,12 @@ Page.propTypes = {
   createValue: PropTypes.func.isRequired,
   updateValue: PropTypes.func.isRequired,
   deleteValue: PropTypes.func.isRequired,
+  copyValue: PropTypes.func.isRequired,
   activateSet: PropTypes.func.isRequired,
   createSet: PropTypes.func.isRequired,
   updateSet: PropTypes.func.isRequired,
   deleteSet: PropTypes.func.isRequired,
-  copyValue: PropTypes.func.isRequired
+  copySet: PropTypes.func.isRequired
 }
 
 export default Page
diff --git a/rdmo/projects/assets/js/interview/components/main/page/PageHead.js b/rdmo/projects/assets/js/interview/components/main/page/PageHead.js
index 2b3be16650..719afecbd3 100644
--- a/rdmo/projects/assets/js/interview/components/main/page/PageHead.js
+++ b/rdmo/projects/assets/js/interview/components/main/page/PageHead.js
@@ -9,7 +9,8 @@ import useModal from 'rdmo/core/assets/js/hooks/useModal'
 import PageHeadDeleteModal from './PageHeadDeleteModal'
 import PageHeadFormModal from './PageHeadFormModal'
 
-const PageHead = ({ templates, page, sets, values, currentSet, activateSet, createSet, updateSet, deleteSet }) => {
+const PageHead = ({ templates, page, sets, values, currentSet,
+                    activateSet, createSet, updateSet, deleteSet, copySet }) => {
 
   const currentSetValue = isNil(currentSet) ? null : (
     values.find((value) => (
@@ -20,6 +21,7 @@ const PageHead = ({ templates, page, sets, values, currentSet, activateSet, crea
   const {show: showCreateModal, open: openCreateModal, close: closeCreateModal} = useModal()
   const {show: showUpdateModal, open: openUpdateModal, close: closeUpdateModal} = useModal()
   const {show: showDeleteModal, open: openDeleteModal, close: closeDeleteModal} = useModal()
+  const {show: showCopyModal, open: openCopyModal, close: closeCopyModal} = useModal()
 
   const handleActivateSet = (event, set) => {
     event.preventDefault()
@@ -53,6 +55,16 @@ const PageHead = ({ templates, page, sets, values, currentSet, activateSet, crea
     closeDeleteModal()
   }
 
+  const handleCopySet = (text) => {
+    copySet(currentSet, currentSetValue, {
+      attribute: page.attribute,
+      set_index: last(sets) ? last(sets).set_index + 1 : 0,
+      set_collection: page.is_collection,
+      text
+    })
+    closeCopyModal()
+  }
+
   return page.is_collection && (
     <div className="interview-page-tabs">
       <Html html={templates.project_interview_page_help} />
@@ -82,12 +94,13 @@ const PageHead = ({ templates, page, sets, values, currentSet, activateSet, crea
               </li>
             </ul>
             <div className="interview-page-tabs-buttons">
-                {
-                  page.attribute && (
-                    <button className="btn-link fa fa-pencil" title={gettext('Edit tab')} onClick={openUpdateModal} />
-                  )
-                }
-                <button className="btn-link fa fa-trash" title={gettext('Remove tab')} onClick={openDeleteModal} />
+              {
+                page.attribute && (
+                  <button className="btn-link fa fa-pencil" title={gettext('Edit tab')} onClick={openUpdateModal} />
+                )
+              }
+              <button className="btn-link fa fa-copy" title={gettext('Copy tab')} onClick={openCopyModal} />
+              <button className="btn-link fa fa-trash" title={gettext('Remove tab')} onClick={openDeleteModal} />
             </div>
           </>
         ) : (
@@ -99,15 +112,28 @@ const PageHead = ({ templates, page, sets, values, currentSet, activateSet, crea
 
       <PageHeadFormModal
         title={capitalize(page.verbose_name)}
+        submitLabel={gettext('Create')}
+        submitColor="success"
         show={showCreateModal}
         initial={isNil(page.attribute) ? null : ''}
         onClose={closeCreateModal}
         onSubmit={handleCreateSet}
       />
+      <PageHeadFormModal
+        title={capitalize(page.verbose_name)}
+        submitLabel={gettext('Copy')}
+        submitColor="info"
+        show={showCopyModal}
+        initial={isNil(page.attribute) ? null : ''}
+        onClose={closeCopyModal}
+        onSubmit={handleCopySet}
+      />
       {
         currentSetValue && (
           <PageHeadFormModal
             title={capitalize(page.verbose_name)}
+            submitLabel={gettext('Update')}
+            submitColor="primary"
             show={showUpdateModal}
             initial={currentSetValue.text}
             onClose={closeUpdateModal}
@@ -117,6 +143,7 @@ const PageHead = ({ templates, page, sets, values, currentSet, activateSet, crea
       }
       <PageHeadDeleteModal
         title={capitalize(page.verbose_name)}
+        name={currentSetValue ? currentSetValue.text : null}
         show={showDeleteModal}
         onClose={closeDeleteModal}
         onSubmit={handleDeleteSet}
@@ -134,7 +161,8 @@ PageHead.propTypes = {
   activateSet: PropTypes.func.isRequired,
   createSet: PropTypes.func.isRequired,
   updateSet: PropTypes.func.isRequired,
-  deleteSet: PropTypes.func.isRequired
+  deleteSet: PropTypes.func.isRequired,
+  copySet: PropTypes.func.isRequired
 }
 
 export default PageHead
diff --git a/rdmo/projects/assets/js/interview/components/main/page/PageHeadDeleteModal.js b/rdmo/projects/assets/js/interview/components/main/page/PageHeadDeleteModal.js
index bb82035f9a..594c20c771 100644
--- a/rdmo/projects/assets/js/interview/components/main/page/PageHeadDeleteModal.js
+++ b/rdmo/projects/assets/js/interview/components/main/page/PageHeadDeleteModal.js
@@ -3,11 +3,19 @@ import PropTypes from 'prop-types'
 
 import Modal from 'rdmo/core/assets/js/components/Modal'
 
-const PageHeadDeleteModal = ({ title, show, onClose, onSubmit }) => {
+const PageHeadDeleteModal = ({ title, name, show, onClose, onSubmit }) => {
   return (
     <Modal title={title} show={show} submitLabel={gettext('Delete')} submitProps={{className: 'btn btn-danger'}}
            onClose={onClose} onSubmit={onSubmit}>
-      <p>{gettext('You are about to permanently delete this tab.')}</p>
+      {
+        name ? (
+          <p dangerouslySetInnerHTML={{
+          __html: interpolate(gettext('You are about to permanently delete the tab named: <strong>%s</strong>'), [name])
+          }}></p>
+        ) : (
+          <p>{gettext('You are about to permanently delete this tab.')}</p>
+        )
+      }
       <p>{gettext('This includes all given answers for this tab on all pages, not just this one.')}</p>
       <p className="text-danger">{gettext('This action cannot be undone!')}</p>
     </Modal>
@@ -16,6 +24,7 @@ const PageHeadDeleteModal = ({ title, show, onClose, onSubmit }) => {
 
 PageHeadDeleteModal.propTypes = {
   title: PropTypes.string.isRequired,
+  name: PropTypes.string,
   show: PropTypes.bool.isRequired,
   onClose: PropTypes.func.isRequired,
   onSubmit: PropTypes.func.isRequired,
diff --git a/rdmo/projects/assets/js/interview/components/main/page/PageHeadFormModal.js b/rdmo/projects/assets/js/interview/components/main/page/PageHeadFormModal.js
index d5391b062f..fee6feda62 100644
--- a/rdmo/projects/assets/js/interview/components/main/page/PageHeadFormModal.js
+++ b/rdmo/projects/assets/js/interview/components/main/page/PageHeadFormModal.js
@@ -7,18 +7,11 @@ import Modal from 'rdmo/core/assets/js/components/Modal'
 import useFocusEffect from '../../../hooks/useFocusEffect'
 
 
-const PageHeadFormModal = ({ title, show, initial, onClose, onSubmit }) => {
+const PageHeadFormModal = ({ title, submitLabel, submitColor, show, initial, onClose, onSubmit }) => {
 
   const ref = useRef(null)
   const [inputValue, setInputValue] = useState('')
   const [hasError, setHasError] = useState(false)
-  const submitLabel = isEmpty(initial) ? gettext('Create') : gettext('Update')
-  const submitProps = {
-    className: classNames('btn', {
-      'btn-success': isEmpty(initial),
-      'btn-primary': !isEmpty(initial),
-    })
-  }
 
   const handleSubmit = () => {
     if (isEmpty(inputValue) && !isNil(initial)) {
@@ -46,7 +39,7 @@ const PageHeadFormModal = ({ title, show, initial, onClose, onSubmit }) => {
   useFocusEffect(ref, show)
 
   return (
-    <Modal title={title} show={show} submitLabel={submitLabel} submitProps={submitProps}
+    <Modal title={title} show={show} submitLabel={submitLabel} submitProps={{className: `btn btn-${submitColor}`}}
            onClose={onClose} onSubmit={handleSubmit} disableSubmit={hasError}>
       {
         isNil(initial) ? (
@@ -82,6 +75,8 @@ const PageHeadFormModal = ({ title, show, initial, onClose, onSubmit }) => {
 
 PageHeadFormModal.propTypes = {
   title: PropTypes.string.isRequired,
+  submitLabel: PropTypes.string.isRequired,
+  submitColor: PropTypes.string.isRequired,
   show: PropTypes.bool.isRequired,
   initial: PropTypes.string,
   onClose: PropTypes.func.isRequired,
diff --git a/rdmo/projects/assets/js/interview/components/main/question/QuestionCopyValue.js b/rdmo/projects/assets/js/interview/components/main/question/QuestionCopyValue.js
index 57c9d40879..23892a72bf 100644
--- a/rdmo/projects/assets/js/interview/components/main/question/QuestionCopyValue.js
+++ b/rdmo/projects/assets/js/interview/components/main/question/QuestionCopyValue.js
@@ -9,7 +9,7 @@ const QuestionCopyValue = ({ question, value, siblings, copyValue }) => {
     !question.is_collection &&
     !isEmptyValue(value) &&
     siblings.some((value) => isEmptyValue(value)) && (
-      <button className="btn btn-link btn-apply-to-all" onClick={() => copyValue(value, siblings)}
+      <button className="btn btn-link btn-apply-to-all" onClick={() => copyValue(value)}
               title={gettext('Apply this answer to all tabs where this question is empty')}>
         <i className="fa fa-arrow-circle-right fa-btn"></i>
       </button>
diff --git a/rdmo/projects/assets/js/interview/components/main/question/QuestionCopyValues.js b/rdmo/projects/assets/js/interview/components/main/question/QuestionCopyValues.js
index 699c22a767..181098590b 100644
--- a/rdmo/projects/assets/js/interview/components/main/question/QuestionCopyValues.js
+++ b/rdmo/projects/assets/js/interview/components/main/question/QuestionCopyValues.js
@@ -5,17 +5,13 @@ import { isEmpty } from 'lodash'
 import { isEmptyValue } from '../../../utils/value'
 
 const QuestionCopyValues = ({ question, sets, values, siblings, currentSet, copyValue }) => {
-  const handleCopyValues = () => {
-    values.forEach((value) => copyValue(value))
-  }
-
   const button = question.widget_type == 'checkbox' ? (
-    <button className="btn btn-link btn-apply-to-all" onClick={handleCopyValues}
+    <button className="btn btn-link btn-apply-to-all" onClick={() => copyValue(...values)}
             title={gettext('Apply this answer to all tabs where this question is empty')}>
       <i className="fa fa-arrow-circle-right fa-btn"></i>
     </button>
   ) : (
-    <button type="button" className="btn btn-primary btn-xs copy-value-button ml-10" onClick={handleCopyValues}>
+    <button type="button" className="btn btn-primary btn-xs copy-value-button ml-10" onClick={() => copyValue(...values)}>
       <i className="fa fa-arrow-circle-right fa-btn"></i> {gettext('Apply to all')}
     </button>
   )
diff --git a/rdmo/projects/assets/js/interview/components/main/questionset/QuestionSet.js b/rdmo/projects/assets/js/interview/components/main/questionset/QuestionSet.js
index a0a30396ed..c9131f6a0b 100644
--- a/rdmo/projects/assets/js/interview/components/main/questionset/QuestionSet.js
+++ b/rdmo/projects/assets/js/interview/components/main/questionset/QuestionSet.js
@@ -8,12 +8,13 @@ import Question from '../question/Question'
 
 import QuestionSetAddSet from './QuestionSetAddSet'
 import QuestionSetAddSetHelp from './QuestionSetAddSetHelp'
+import QuestionSetCopySet from './QuestionSetCopySet'
 import QuestionSetHelp from './QuestionSetHelp'
 import QuestionSetHelpTemplate from './QuestionSetHelpTemplate'
 import QuestionSetRemoveSet from './QuestionSetRemoveSet'
 
 const QuestionSet = ({ templates, questionset, sets, values, disabled, isManager,
-                       parentSet, createSet, updateSet, deleteSet,
+                       parentSet, createSet, updateSet, deleteSet, copySet,
                        createValue, updateValue, deleteValue, copyValue }) => {
 
   const setPrefix = getChildPrefix(parentSet)
@@ -35,7 +36,8 @@ const QuestionSet = ({ templates, questionset, sets, values, disabled, isManager
           currentSets.map((set, setIndex) => (
             <div key={setIndex} className="interview-block">
               <div className="interview-block-options">
-                <QuestionSetRemoveSet questionset={questionset} set={set} deleteSet={deleteSet} />
+                <QuestionSetCopySet questionset={questionset} sets={sets} currentSet={set} copySet={copySet} />
+                <QuestionSetRemoveSet questionset={questionset} currentSet={set} deleteSet={deleteSet} />
               </div>
               <div className="row">
                 {
@@ -55,6 +57,7 @@ const QuestionSet = ({ templates, questionset, sets, values, disabled, isManager
                             createSet={createSet}
                             updateSet={updateSet}
                             deleteSet={deleteSet}
+                            copySet={copySet}
                             createValue={createValue}
                             updateValue={updateValue}
                             deleteValue={deleteValue}
@@ -115,6 +118,7 @@ QuestionSet.propTypes = {
   createSet: PropTypes.func.isRequired,
   updateSet: PropTypes.func.isRequired,
   deleteSet: PropTypes.func.isRequired,
+  copySet: PropTypes.func.isRequired,
   createValue: PropTypes.func.isRequired,
   updateValue: PropTypes.func.isRequired,
   deleteValue: PropTypes.func.isRequired,
diff --git a/rdmo/projects/assets/js/interview/components/main/questionset/QuestionSetCopyModal.js b/rdmo/projects/assets/js/interview/components/main/questionset/QuestionSetCopyModal.js
new file mode 100644
index 0000000000..151059eb60
--- /dev/null
+++ b/rdmo/projects/assets/js/interview/components/main/questionset/QuestionSetCopyModal.js
@@ -0,0 +1,21 @@
+import React from 'react'
+import PropTypes from 'prop-types'
+
+import Modal from 'rdmo/core/assets/js/components/Modal'
+
+const QuestionSetCopyModal = ({ title, show, onClose, onSubmit }) => {
+  return (
+    <Modal title={title} show={show} submitText={gettext('Copy')} submitColor="info"
+           onClose={onClose} onSubmit={onSubmit}>
+    </Modal>
+  )
+}
+
+QuestionSetCopyModal.propTypes = {
+  title: PropTypes.string.isRequired,
+  show: PropTypes.bool.isRequired,
+  onClose: PropTypes.func.isRequired,
+  onSubmit: PropTypes.func.isRequired,
+}
+
+export default QuestionSetCopyModal
diff --git a/rdmo/projects/assets/js/interview/components/main/questionset/QuestionSetCopySet.js b/rdmo/projects/assets/js/interview/components/main/questionset/QuestionSetCopySet.js
new file mode 100644
index 0000000000..cc2e5492d5
--- /dev/null
+++ b/rdmo/projects/assets/js/interview/components/main/questionset/QuestionSetCopySet.js
@@ -0,0 +1,43 @@
+import React from 'react'
+import PropTypes from 'prop-types'
+import { capitalize, last } from 'lodash'
+
+import useModal from 'rdmo/core/assets/js/hooks/useModal'
+
+import QuestionSetCopyModal from './QuestionSetCopyModal'
+
+const QuestionCopySet = ({ questionset, sets, currentSet, copySet }) => {
+  const modal = useModal()
+
+  const handleCopySet = () => {
+    copySet(currentSet, null, {
+      set_prefix: currentSet.set_prefix,
+      set_index: last(sets) ? last(sets).set_index + 1 : 0,
+    })
+    modal.close()
+  }
+
+  return questionset.is_collection && (
+    <>
+      <button type="button" className="btn btn-link btn-copy-set" onClick={modal.open}>
+        <i className="fa fa-copy fa-btn"></i>
+      </button>
+
+      <QuestionSetCopyModal
+        title={capitalize(questionset.verbose_name)}
+        show={modal.show}
+        onClose={modal.close}
+        onSubmit={handleCopySet}
+      />
+    </>
+  )
+}
+
+QuestionCopySet.propTypes = {
+  questionset: PropTypes.object.isRequired,
+  sets: PropTypes.array.isRequired,
+  currentSet: PropTypes.object.isRequired,
+  copySet: PropTypes.func.isRequired
+}
+
+export default QuestionCopySet
diff --git a/rdmo/projects/assets/js/interview/components/main/questionset/QuestionSetRemoveSet.js b/rdmo/projects/assets/js/interview/components/main/questionset/QuestionSetRemoveSet.js
index a7364a8909..06a0dcae61 100644
--- a/rdmo/projects/assets/js/interview/components/main/questionset/QuestionSetRemoveSet.js
+++ b/rdmo/projects/assets/js/interview/components/main/questionset/QuestionSetRemoveSet.js
@@ -6,12 +6,12 @@ import useModal from 'rdmo/core/assets/js/hooks/useModal'
 
 import QuestionSetDeleteModal from './QuestionSetDeleteModal'
 
-const QuestionAddSet = ({ questionset, set, deleteSet }) => {
+const QuestionRemoveSet = ({ questionset, currentSet, deleteSet }) => {
 
   const {show: showDeleteModal, open: openDeleteModal, close: closeDeleteModal} = useModal()
 
   const handleDeleteSet = () => {
-    deleteSet(set)
+    deleteSet(currentSet)
     closeDeleteModal()
   }
 
@@ -31,10 +31,10 @@ const QuestionAddSet = ({ questionset, set, deleteSet }) => {
   )
 }
 
-QuestionAddSet.propTypes = {
+QuestionRemoveSet.propTypes = {
   questionset: PropTypes.object.isRequired,
-  set: PropTypes.object.isRequired,
+  currentSet: PropTypes.object.isRequired,
   deleteSet: PropTypes.func.isRequired
 }
 
-export default QuestionAddSet
+export default QuestionRemoveSet
diff --git a/rdmo/projects/assets/js/interview/components/main/widget/SelectInput.js b/rdmo/projects/assets/js/interview/components/main/widget/SelectInput.js
index a0d694957e..b53f1f6baf 100644
--- a/rdmo/projects/assets/js/interview/components/main/widget/SelectInput.js
+++ b/rdmo/projects/assets/js/interview/components/main/widget/SelectInput.js
@@ -22,14 +22,10 @@ import OptionText from './common/OptionText'
 const SelectInput = ({ question, value, options, disabled, creatable, updateValue, buttons }) => {
 
   const [inputValue, setInputValue] = useState('')
-  // const [isOpen, setIsOpen] = useState(false)
 
   const handleChange = (option) => {
     if (isNil(option)) {
-      // close the select input when the value is reset
-      // setIsOpen(false)
       setInputValue('')
-
       updateValue(value, {})
     } else if (option.__isNew__ === true) {
       updateValue(value, {
@@ -85,6 +81,7 @@ const SelectInput = ({ question, value, options, disabled, creatable, updateValu
   const isAsync = question.optionsets.some((optionset) => optionset.has_search)
 
   const selectProps = {
+    key: value.id,
     classNamePrefix: 'react-select',
     className: classnames,
     backspaceRemovesValue: false,
diff --git a/rdmo/projects/assets/js/interview/containers/Main.js b/rdmo/projects/assets/js/interview/containers/Main.js
index a8f6189fe2..be0b98f316 100644
--- a/rdmo/projects/assets/js/interview/containers/Main.js
+++ b/rdmo/projects/assets/js/interview/containers/Main.js
@@ -54,6 +54,7 @@ const Main = ({ config, settings, templates, user, project, interview, configAct
               updateSet={interviewActions.updateSet}
               deleteSet={interviewActions.deleteSet}
               copyValue={interviewActions.copyValue}
+              copySet={interviewActions.copySet}
             />
           )
         }
diff --git a/rdmo/projects/assets/js/interview/reducers/interviewReducer.js b/rdmo/projects/assets/js/interview/reducers/interviewReducer.js
index 39ac156bc2..d62bcd60cf 100644
--- a/rdmo/projects/assets/js/interview/reducers/interviewReducer.js
+++ b/rdmo/projects/assets/js/interview/reducers/interviewReducer.js
@@ -25,7 +25,10 @@ import {
   CREATE_SET,
   DELETE_SET_INIT,
   DELETE_SET_SUCCESS,
-  DELETE_SET_ERROR
+  DELETE_SET_ERROR,
+  COPY_SET_INIT,
+  COPY_SET_SUCCESS,
+  COPY_SET_ERROR
 } from '../actions/actionTypes'
 
 const initialState = {
@@ -76,6 +79,8 @@ export default function interviewReducer(state = initialState, action) {
         values: state.values.filter((value) => !action.values.includes(value)),
         sets: state.sets.filter((set) => !action.sets.includes(set))
       }
+    case COPY_SET_SUCCESS:
+      return { ...state, values: action.values, sets: action.sets }
     case FETCH_PAGE_INIT:
     case FETCH_NAVIGATION_INIT:
     case FETCH_OPTIONS_INIT:
@@ -97,6 +102,7 @@ export default function interviewReducer(state = initialState, action) {
         ))
       }
     case DELETE_SET_INIT:
+    case COPY_SET_INIT:
       return { ...state, errors: [] }
     case FETCH_PAGE_ERROR:
     case FETCH_NAVIGATION_ERROR:
@@ -117,6 +123,8 @@ export default function interviewReducer(state = initialState, action) {
     case DELETE_VALUE_ERROR:
     case DELETE_SET_ERROR:
       return { ...state, errors: [...state.errors, { actionType: action.type, ...action.error }] }
+    case COPY_SET_ERROR:
+      return { ...state, errors: [...state.errors, { actionType: action.type, ...action.error }] }
     default:
       return state
   }
diff --git a/rdmo/projects/assets/js/interview/utils/set.js b/rdmo/projects/assets/js/interview/utils/set.js
index 282fa90b21..9a576875f9 100644
--- a/rdmo/projects/assets/js/interview/utils/set.js
+++ b/rdmo/projects/assets/js/interview/utils/set.js
@@ -1,4 +1,4 @@
-import { isEmpty, isNil, toNumber, toString, last } from 'lodash'
+import { isEmpty, isNil, toNumber, toString, last, sortBy } from 'lodash'
 
 import SetFactory from '../factories/SetFactory'
 
@@ -27,7 +27,7 @@ const getDescendants = (items, set) => {
 }
 
 const gatherSets = (values) => {
-  return values.reduce((sets, value) => {
+  const sets = values.reduce((sets, value) => {
     if (sets.find((set) => (
       (set.set_prefix === value.set_prefix) &&
       (set.set_index === value.set_index)
@@ -40,6 +40,8 @@ const gatherSets = (values) => {
       })]
     }
   }, [])
+
+  return sortBy(sets, ['set_prefix', 'set_index'])
 }
 
 const initSets = (sets, element, setPrefix) => {
diff --git a/rdmo/projects/assets/js/projects/components/main/Projects.js b/rdmo/projects/assets/js/projects/components/main/Projects.js
index 6f15f8e7b8..fb9b672e5a 100644
--- a/rdmo/projects/assets/js/projects/components/main/Projects.js
+++ b/rdmo/projects/assets/js/projects/components/main/Projects.js
@@ -116,20 +116,36 @@ const Projects = ({ config, configActions, currentUserObject, projectsActions, p
 
   if (myProjects) {
     visibleColumns.splice(2, 0, 'role')
-    columnWidths = ['35%', '20%', '20%', '20%', '5%']
+    columnWidths = ['40%', '18%', '18%', '18%', '6%']
   } else {
     visibleColumns.splice(2, 0, 'created')
     visibleColumns.splice(2, 0, 'owner')
-    columnWidths = ['35%', '10%', '20%', '20%', '20%', '5%']
+    columnWidths = ['30%', '10%', '18%', '18%', '18%', '6%']
   }
 
   const cellFormatters = {
     title: (content, row) => renderTitle(content, row),
     role: (_content, row) => {
       const { rolesString } = getUserRoles(row, currentUserId)
-      return rolesString
+      return <>
+        {
+          rolesString && <p>{rolesString}</p>
+        }
+        {
+          row.visibility && <p className="text-muted">{row.visibility}</p>
+        }
+      </>
     },
-    owner: (_content, row) => row.owners.map(owner => `${owner.first_name} ${owner.last_name}`).join('; '),
+    owner: (_content, row) => (
+      <>
+        <p>
+          {row.owners.map(owner => `${owner.first_name} ${owner.last_name}`).join('; ')}
+        </p>
+        {
+          row.visibility && <p className="text-muted">{row.visibility}</p>
+        }
+      </>
+    ),
     progress: (_content, row) => getProgressString(row),
     created: content => useFormattedDateTime(content, language),
     last_changed: content => useFormattedDateTime(content, language),
diff --git a/rdmo/projects/assets/scss/interview.scss b/rdmo/projects/assets/scss/interview.scss
index 20eb128e67..4fa5b2a1c4 100644
--- a/rdmo/projects/assets/scss/interview.scss
+++ b/rdmo/projects/assets/scss/interview.scss
@@ -100,22 +100,20 @@
 
     .interview-block-options {
         position: absolute;
-        top: 0;
-        right: 0;
+        top: 6px;
+        right: 8px;
         z-index: 5;
 
+        display: flex;
+        gap: 4px;
+
+        .btn-copy-set,
         .btn-remove-set {
             opacity: 0.8;
             line-height: 20px;
             font-size: 14px;
 
-            position: absolute;
-            z-index: 5;
-            top: 0;
-            right: 0;
-
-            padding-left: 8px;
-            padding-right: 8px;
+            padding: 0;
 
             &:hover {
                 opacity: 1;
@@ -372,6 +370,10 @@
             display: inline;
         }
     }
+
+    .react-select {
+        max-width: 100%;
+    }
 }
 
 .badge-optional {
diff --git a/rdmo/projects/managers.py b/rdmo/projects/managers.py
index a6d49e4ff6..20764ae3b6 100644
--- a/rdmo/projects/managers.py
+++ b/rdmo/projects/managers.py
@@ -155,6 +155,29 @@ def exclude_empty(self):
     def distinct_list(self):
         return self.order_by('attribute').values_list('attribute', 'set_prefix', 'set_index').distinct()
 
+    def filter_set(self, set_value):
+        # get the catalog and prefetch most elements of the catalog
+        catalog = set_value.project.catalog
+        catalog.prefetch_elements()
+
+        # Get all attributes from matching elements and their descendants
+        attributes = {
+            descendant.attribute
+            for element in (catalog.pages + catalog.questions)
+            if element.attribute == set_value.attribute
+            for descendant in element.descendants
+        }
+
+        # construct the set_prefix for descendants for this set
+        descendants_set_prefix = \
+            f'{set_value.set_prefix}|{set_value.set_index}' if set_value.set_prefix else str(set_value.set_index)
+
+        # collect all values for this set and all descendants
+        return self.filter(attribute__in=attributes).filter(
+            Q(set_prefix=set_value.set_prefix, set_index=set_value.set_index) |
+            Q(set_prefix__startswith=descendants_set_prefix)
+        )
+
 
 class ProjectManager(CurrentSiteManagerMixin, TreeManager):
 
diff --git a/rdmo/projects/serializers/v1/__init__.py b/rdmo/projects/serializers/v1/__init__.py
index 8e61748193..26ea38402d 100644
--- a/rdmo/projects/serializers/v1/__init__.py
+++ b/rdmo/projects/serializers/v1/__init__.py
@@ -5,6 +5,7 @@
 
 from rest_framework import serializers
 
+from rdmo.domain.models import Attribute
 from rdmo.questions.models import Catalog
 from rdmo.services.validators import ProviderValidator
 
@@ -64,6 +65,8 @@ def get_queryset(self):
 
     last_changed = serializers.DateTimeField(read_only=True)
 
+    visibility = serializers.CharField(source='visibility.get_help_display', read_only=True)
+
     class Meta:
         model = Project
         fields = (
@@ -84,7 +87,8 @@ class Meta:
             'site',
             'views',
             'progress_total',
-            'progress_count'
+            'progress_count',
+            'visibility'
         )
         read_only_fields = (
             'snapshots',
@@ -404,6 +408,8 @@ class Meta:
 
 class ValueSerializer(serializers.ModelSerializer):
 
+    attribute = serializers.PrimaryKeyRelatedField(queryset=Attribute.objects.all(), required=True)
+
     class Meta:
         model = Value
         fields = (
diff --git a/rdmo/projects/templates/projects/project_form_visibility.html b/rdmo/projects/templates/projects/project_form_visibility.html
index 2356b821ee..4c5a736c5c 100644
--- a/rdmo/projects/templates/projects/project_form_visibility.html
+++ b/rdmo/projects/templates/projects/project_form_visibility.html
@@ -19,12 +19,12 @@ <h1>
         {% endblocktrans %}
     </p>
 
-    {% if object.visibility and 'sites' in form.fields or 'groups' in form.fields %}
+    {% if not object.visibility %}
+    {% bootstrap_form submit=_('Make visible') %}
+    {% elif object.visibility and 'sites' in form.fields or 'groups' in form.fields %}
     {% bootstrap_form submit=_('Update visibility') delete=_('Remove visibility') %}
-    {% elif object.visibility %}
-    {% bootstrap_form delete=_('Remove visibility') %}
     {% else %}
-    {% bootstrap_form submit=_('Make visible') %}
+    {% bootstrap_form delete=_('Remove visibility') %}
     {% endif %}
 
 {% endblock %}
diff --git a/rdmo/projects/tests/test_utils.py b/rdmo/projects/tests/test_utils.py
index db2bfe2c51..a3a182c33f 100644
--- a/rdmo/projects/tests/test_utils.py
+++ b/rdmo/projects/tests/test_utils.py
@@ -7,8 +7,8 @@
 from rdmo.core.tests.utils import compute_checksum
 
 from ..filters import ProjectFilter
-from ..models import Project
-from ..utils import copy_project, set_context_querystring_with_filter_and_page
+from ..models import Project, Value
+from ..utils import compute_set_prefix_from_set_value, copy_project, set_context_querystring_with_filter_and_page
 
 GET_queries = [
     'page=2&title=project',
@@ -17,6 +17,18 @@
     ''
 ]
 
+SET_VALUES = [
+    ({'set_prefix': ''   , 'set_index': 1}, {'set_prefix': '0'},     '1'),
+    ({'set_prefix': ''   , 'set_index': 1}, {'set_prefix': '0|0'},   '1|0'),
+    ({'set_prefix': ''   , 'set_index': 1}, {'set_prefix': '0|0|0'}, '1|0|0'),
+    ({'set_prefix': ''   , 'set_index': 2}, {'set_prefix': '0'},     '2'),
+    ({'set_prefix': ''   , 'set_index': 2}, {'set_prefix': '0|0'},   '2|0'),
+    ({'set_prefix': ''   , 'set_index': 2}, {'set_prefix': '0|0|0'}, '2|0|0'),
+    ({'set_prefix': '0'  , 'set_index': 1}, {'set_prefix': '0|0'},   '0|1'),
+    ({'set_prefix': '0'  , 'set_index': 1}, {'set_prefix': '0|0|0'}, '0|1|0'),
+    ({'set_prefix': '0|0', 'set_index': 1}, {'set_prefix': '0|0|0'}, '0|0|1'),
+]
+
 @pytest.mark.parametrize('GET_query', GET_queries)
 def test_set_context_querystring_with_filter_and_page(GET_query):
     querydict = QueryDict(GET_query)
@@ -128,3 +140,8 @@ def test_copy_project(db, files):
                        compute_checksum(value.file.open('rb').read())
             else:
                 assert not value.file
+
+
+@pytest.mark.parametrize('set_value, value, result', SET_VALUES)
+def test_compute_set_prefix_from_set_value(set_value, value, result):
+    assert compute_set_prefix_from_set_value(Value(**set_value), Value(**value)) == result
diff --git a/rdmo/projects/tests/test_viewset_project_value.py b/rdmo/projects/tests/test_viewset_project_value.py
index aaa1fb2693..3359527fb9 100644
--- a/rdmo/projects/tests/test_viewset_project_value.py
+++ b/rdmo/projects/tests/test_viewset_project_value.py
@@ -1,3 +1,4 @@
+import json
 from pathlib import Path
 
 import pytest
@@ -30,7 +31,7 @@
     'site': [1, 2, 3, 4, 5, 12]
 }
 
-add_value_permission_map = change_value_permission_map = delete_value_permission_map = {
+add_value_permission_map = change_value_permission_map = delete_value_permission_map = copy_value_permission_map = {
     'owner': [1, 2, 3, 4, 5, 12],
     'manager': [1, 3, 5],
     'author': [1, 3, 5],
@@ -76,6 +77,7 @@
     ('phone', '+49 (0) 1337 12345678')
 )
 
+
 @pytest.mark.parametrize('username,password', users)
 @pytest.mark.parametrize('project_id', projects)
 def test_list(db, client, username, password, project_id):
@@ -248,10 +250,50 @@ def test_delete(db, client, username, password, value_id):
         assert Value.objects.filter(pk=value_id).exists()
 
 
+@pytest.mark.parametrize('username,password', users)
+@pytest.mark.parametrize('value_id, set_values_count', set_values)
+def test_copy_set(db, client, username, password, value_id, set_values_count):
+    client.login(username=username, password=password)
+    set_value = Value.objects.get(id=value_id)
+    values_count = Value.objects.count()
+
+    url = reverse(urlnames['set'], args=[set_value.project_id, value_id])
+    data = {
+        'attribute': set_value.attribute.id,
+        'set_prefix': set_value.set_prefix,
+        'set_index': 2,
+        'text': 'new'
+    }
+    response = client.post(url, data=json.dumps(data), content_type="application/json")
+
+    if set_value.project_id in copy_value_permission_map.get(username, []):
+        assert response.status_code == 201
+        assert len(response.json()) == set_values_count + 1
+        assert Value.objects.get(
+            project=set_value.project_id,
+            snapshot=None,
+            **data
+        )
+        assert Value.objects.count() == values_count + set_values_count + 1  # one is for set/id
+        for value_data in response.json():
+            if value_data['set_prefix'] == data['set_prefix']:
+                assert value_data['set_index'] == data['set_index']
+            else:
+                set_prefix_split = value_data['set_prefix'].split('|')
+                assert set_prefix_split[0] == str(data['set_index'])
+
+    elif set_value.project_id in view_value_permission_map.get(username, []):
+        assert response.status_code == 403
+        assert Value.objects.count() == values_count
+    else:
+        assert response.status_code == 404
+        assert Value.objects.count() == values_count
+
+
 @pytest.mark.parametrize('username,password', users)
 @pytest.mark.parametrize('project_id', projects)
-@pytest.mark.parametrize('value_id,set_values_count', set_values)
-def test_set(db, client, username, password, project_id, value_id, set_values_count):
+@pytest.mark.parametrize('value_id, set_values_count', set_values)
+def test_delete_set(db, client, username, password, project_id, value_id, set_values_count):
     client.login(username=username, password=password)
     value_exists = Value.objects.filter(project_id=project_id, snapshot=None, id=value_id).exists()
     values_count = Value.objects.count()
diff --git a/rdmo/projects/utils.py b/rdmo/projects/utils.py
index ab619b54b4..06153b855e 100644
--- a/rdmo/projects/utils.py
+++ b/rdmo/projects/utils.py
@@ -261,3 +261,11 @@ def get_upload_accept():
         else:
             return None
     return ','.join(accept)
+
+
+def compute_set_prefix_from_set_value(set_value, value):
+    set_prefix_length = len(set_value.set_prefix.split('|')) if set_value.set_prefix else 0
+    return '|'.join([
+        str(set_value.set_index) if (index == set_prefix_length) else value
+        for index, value in enumerate(value.set_prefix.split('|'))
+    ])
diff --git a/rdmo/projects/viewsets.py b/rdmo/projects/viewsets.py
index a0221ee894..9eccecfa28 100644
--- a/rdmo/projects/viewsets.py
+++ b/rdmo/projects/viewsets.py
@@ -1,14 +1,14 @@
 from django.conf import settings
 from django.contrib.sites.shortcuts import get_current_site
 from django.core.exceptions import ObjectDoesNotExist
-from django.db.models import OuterRef, Prefetch, Q, Subquery
+from django.db.models import OuterRef, Prefetch, Subquery
 from django.db.models.functions import Coalesce, Greatest
 from django.http import Http404, HttpResponseRedirect
 from django.utils.translation import gettext_lazy as _
 
 from rest_framework import serializers, status
 from rest_framework.decorators import action
-from rest_framework.exceptions import NotFound
+from rest_framework.exceptions import MethodNotAllowed, NotFound
 from rest_framework.mixins import CreateModelMixin, ListModelMixin, RetrieveModelMixin, UpdateModelMixin
 from rest_framework.pagination import PageNumberPagination
 from rest_framework.permissions import IsAuthenticated
@@ -75,7 +75,13 @@
 )
 from .serializers.v1.overview import CatalogSerializer, ProjectOverviewSerializer
 from .serializers.v1.page import PageSerializer
-from .utils import check_conditions, copy_project, get_upload_accept, send_invite_email
+from .utils import (
+    check_conditions,
+    compute_set_prefix_from_set_value,
+    copy_project,
+    get_upload_accept,
+    send_invite_email,
+)
 
 
 class ProjectPagination(PageNumberPagination):
@@ -115,7 +121,7 @@ def get_queryset(self):
             'snapshots',
             'views',
             Prefetch('memberships', queryset=Membership.objects.select_related('user'), to_attr='memberships_list')
-        ).select_related('catalog')
+        ).select_related('catalog', 'visibility')
 
         # prepare subquery for last_changed
         last_changed_subquery = Subquery(
@@ -497,34 +503,60 @@ def get_queryset(self):
             # this is needed for the swagger ui
             return Value.objects.none()
 
-    @action(detail=True, methods=['DELETE'],
+    @action(detail=True, methods=['POST', 'DELETE'], url_path='set',
             permission_classes=(HasModelPermission | HasProjectPermission, ))
     def set(self, request, parent_lookup_project, pk=None):
+        if request.method == 'POST':
+            return self.copy_set(request, parent_lookup_project, pk)
+        elif request.method == 'DELETE':
+            return self.delete_set(request, parent_lookup_project, pk)
+        else:
+            raise MethodNotAllowed
+
+    def copy_set(self, request, parent_lookup_project, pk=None):
+        # copy all values for questions in questionset collections with the attribute
+        # for this value and the same set_prefix and set_index
+        currentValue = self.get_object()
+
+        # collect all values for this set and all descendants
+        currentValues = self.get_queryset().filter_set(currentValue)
+
+        # de-serialize the posted new set value and save it, use the ValueSerializer
+        # instead of ProjectValueSerializer, since the latter does not include project
+        set_value_serializer = ValueSerializer(data={
+            'project': parent_lookup_project,
+            **request.data
+        })
+        set_value_serializer.is_valid(raise_exception=True)
+        set_value = set_value_serializer.save()
+        set_value_data = set_value_serializer.data
+
+        # create new values for the new set
+        values = []
+        for value in currentValues:
+            value.id = None
+            if value.set_prefix == set_value.set_prefix:
+                value.set_index = set_value.set_index
+            else:
+                value.set_prefix = compute_set_prefix_from_set_value(set_value, value)
+            values.append(value)
+
+        # bulk create the new values
+        values = Value.objects.bulk_create(values)
+        values_data = [ValueSerializer(instance=value).data for value in values]
+
+        # return all new values
+        headers = self.get_success_headers(set_value_serializer.data)
+        return Response([set_value_data, *values_data], status=status.HTTP_201_CREATED, headers=headers)
+
+    def delete_set(self, request, parent_lookup_project, pk=None):
         # delete all values for questions in questionset collections with the attribute
         # for this value and the same set_prefix and set_index
-        value = self.get_object()
-        value.delete()
-
-        # prefetch most elements of the catalog
-        self.project.catalog.prefetch_elements()
-
-        # collect the attributes of all questions of all pages or questionsets
-        # of this catalog, which have the attribute of this value
-        attributes = set()
-        elements = self.project.catalog.pages + self.project.catalog.questions
-        for element in elements:
-            if element.attribute == value.attribute:
-                attributes.update([descendant.attribute for descendant in element.descendants])
-
-        # construct the set_prefix for descendants for this set
-        descendants_set_prefix = f'{value.set_prefix}|{value.set_index}' if value.set_prefix else str(value.set_index)
-
-        # delete all values for this set and all descendants
-        values = self.get_queryset().filter(attribute__in=attributes) \
-                                    .filter(
-                                        Q(set_prefix=value.set_prefix, set_index=value.set_index) |
-                                        Q(set_prefix__startswith=descendants_set_prefix)
-                                    )
+        set_value = self.get_object()
+        set_value.delete()
+
+        # collect all values for this set and all descendants and delete them
+        values = self.get_queryset().filter_set(set_value)
         values.delete()
 
         return Response(status=204)