Index: lams_tool_doku/conf/language/lams/ApplicationResources.properties
===================================================================
diff -u -r31261a5f8d336b5543df5356acc233df8219e714 -r87dce5c82fdf33a8e8335ed56f6a75b5c06a11cb
--- lams_tool_doku/conf/language/lams/ApplicationResources.properties	(.../ApplicationResources.properties)	(revision 31261a5f8d336b5543df5356acc233df8219e714)
+++ lams_tool_doku/conf/language/lams/ApplicationResources.properties	(.../ApplicationResources.properties)	(revision 87dce5c82fdf33a8e8335ed56f6a75b5c06a11cb)
@@ -103,6 +103,8 @@
 monitoring.summary.gallery.walk.start.confirm = Are you sure you want to finish collaboration phase and start Gallery Walk?
 monitoring.summary.gallery.walk.finish = Finish Gallery Walk
 monitoring.summary.gallery.walk.finish.confirm = Are you sure you want to finish Gallery Walk?
+monitoring.summary.learner.reedit = Let learner modify answers
+monitoring.summary.learner.reedit.confirm = Are you sure you want allows students to modify their answers again?
 label.gallery.walk = Gallery Walk
 label.gallery.walk.wait.finish = The Gallery Walk activity has not been set as completed by the teacher. If you have completed, please contact the teacher for assistance.
 label.rating = Rating
Index: lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/service/DokumaranService.java
===================================================================
diff -u -rb0f4135473a7c21793882bd4aa679e6033d14988 -r87dce5c82fdf33a8e8335ed56f6a75b5c06a11cb
--- lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/service/DokumaranService.java	(.../DokumaranService.java)	(revision b0f4135473a7c21793882bd4aa679e6033d14988)
+++ lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/service/DokumaranService.java	(.../DokumaranService.java)	(revision 87dce5c82fdf33a8e8335ed56f6a75b5c06a11cb)
@@ -630,6 +630,20 @@
 	sendGalleryWalkRefreshRequest(dokumaran);
     }
 
+    @Override
+    public void learnerReedit(long toolContentId) throws IOException {
+	Dokumaran dokumaran = getDokumaranByContentId(toolContentId);
+	if (!dokumaran.isGalleryWalkEnabled()) {
+	    throw new IllegalArgumentException(
+		    "Can not allow learners to reedit activity as Gallery Walk is not enabled for Dokumaran with tool content ID "
+			    + toolContentId);
+	}
+	dokumaran.setGalleryWalkStarted(false);
+	dokumaranDao.saveObject(dokumaran);
+
+	sendGalleryWalkRefreshRequest(dokumaran);
+    }
+
     private void sendGalleryWalkRefreshRequest(Dokumaran dokumaran) {
 	ObjectNode jsonCommand = JsonNodeFactory.instance.objectNode();
 	jsonCommand.put("hookTrigger", "doku-refresh-" + dokumaran.getContentId());
Index: lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/service/IDokumaranService.java
===================================================================
diff -u -rb0f4135473a7c21793882bd4aa679e6033d14988 -r87dce5c82fdf33a8e8335ed56f6a75b5c06a11cb
--- lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/service/IDokumaranService.java	(.../IDokumaranService.java)	(revision b0f4135473a7c21793882bd4aa679e6033d14988)
+++ lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/service/IDokumaranService.java	(.../IDokumaranService.java)	(revision 87dce5c82fdf33a8e8335ed56f6a75b5c06a11cb)
@@ -233,6 +233,8 @@
 
     void finishGalleryWalk(long toolContentId) throws IOException;
 
+    void learnerReedit(long toolContentId) throws IOException;
+
     void changeLeaderForGroup(long toolSessionId, long leaderUserId);
 
     Grouping getGrouping(long toolContentId);
Index: lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/web/controller/MonitoringController.java
===================================================================
diff -u -r1324c32fc07460a47b0b53b25a2b43d77fbd500c -r87dce5c82fdf33a8e8335ed56f6a75b5c06a11cb
--- lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/web/controller/MonitoringController.java	(.../MonitoringController.java)	(revision 1324c32fc07460a47b0b53b25a2b43d77fbd500c)
+++ lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/web/controller/MonitoringController.java	(.../MonitoringController.java)	(revision 87dce5c82fdf33a8e8335ed56f6a75b5c06a11cb)
@@ -314,6 +314,13 @@
 	dokumaranService.finishGalleryWalk(toolContentId);
     }
 
+    @RequestMapping("/learnerReedit")
+    private void learnerReedit(HttpServletRequest request) throws IOException {
+	Long toolContentId = WebUtil.readLongParam(request, DokumaranConstants.ATTR_TOOL_CONTENT_ID, false);
+
+	dokumaranService.learnerReedit(toolContentId);
+    }
+
     @RequestMapping("/ae")
     private String tblApplicationExcercise(HttpServletRequest request, HttpServletResponse response)
 	    throws EtherpadException {
Index: lams_tool_doku/web/pages/monitoring/summary.jsp
===================================================================
diff -u -refcf81f45cfb07cebbba85c3494fa9af1bee325f -r87dce5c82fdf33a8e8335ed56f6a75b5c06a11cb
--- lams_tool_doku/web/pages/monitoring/summary.jsp	(.../summary.jsp)	(revision efcf81f45cfb07cebbba85c3494fa9af1bee325f)
+++ lams_tool_doku/web/pages/monitoring/summary.jsp	(.../summary.jsp)	(revision 87dce5c82fdf33a8e8335ed56f6a75b5c06a11cb)
@@ -312,10 +312,10 @@
 				toolContentID : ${dokumaran.contentId}
 			},
 			'success' : function(){
-				$('#doku-monitoring-summary-${sessionMap.toolContentID} #gallery-walk-start, ' +
-				  '#doku-monitoring-summary-${sessionMap.toolContentID} #countdown, ' + 
-				  '#doku-monitoring-summary-${sessionMap.toolContentID} #add-one-minute, #start-activity').hide();
-				$('#doku-monitoring-summary-${sessionMap.toolContentID} #gallery-walk-finish').removeClass('hidden');
+				let summaryPane = $('#doku-monitoring-summary-${sessionMap.toolContentID}');
+				
+				$('#gallery-walk-start', summaryPane).hide();
+				$('#gallery-walk-finish, #learner-reedit', summaryPane).removeClass('hidden');
 			}
 		});
 	}
@@ -347,7 +347,32 @@
 		});
 	}
 
+	
+	function learnerReedit(){
+		if (!confirm('<fmt:message key="monitoring.summary.learner.reedit.confirm" />')) {
+			return;
+		}
+		
+		$.ajax({
+			'url' : '<c:url value="/monitoring/learnerReedit.do"/>',
+			'data': {
+				toolContentID : ${dokumaran.contentId}
+			},
+			'success' : function(){
+				<c:choose>
+					<c:when test="${isTbl}">
+						// reload current tab with Doku summary
+						loadTab(null, null, false);
+					</c:when>
+					<c:otherwise>
+						location.reload();
+					</c:otherwise>
+				</c:choose>
+			}
+		});
+	}
 
+
 	function showChangeLeaderModal(toolSessionId) {
 		$('#doku-monitoring-summary-${sessionMap.toolContentID} #change-leader-modals').empty()
 		.load('<c:url value="/monitoring/displayChangeLeaderForGroupDialogFromActivity.do" />',{
@@ -757,6 +782,12 @@
 				        onClick="javascript:startGalleryWalk()">
 					<fmt:message key="monitoring.summary.gallery.walk.start" /> 
 				</button>
+								
+				<button id="learner-reedit" type="button"
+				        class="btn btn-default ${dokumaran.galleryWalkStarted and not dokumaran.galleryWalkFinished ? '' : 'hidden'}"
+				        onClick="javascript:learnerReedit()">
+					<fmt:message key="monitoring.summary.learner.reedit" /> 
+				</button>
 				
 				<button id="gallery-walk-finish" type="button"
 				        class="btn btn-default ${dokumaran.galleryWalkStarted and not dokumaran.galleryWalkFinished ? '' : 'hidden'}"