Index: lams_monitoring/web/grouping/viewGroups.jsp
===================================================================
diff -u -ra8bfcfbbe983d3069b91882d551d9897b3b4a7fa -r305246a229ea020cd0677daa6fc7953772f7ed54
--- lams_monitoring/web/grouping/viewGroups.jsp	(.../viewGroups.jsp)	(revision a8bfcfbbe983d3069b91882d551d9897b3b4a7fa)
+++ lams_monitoring/web/grouping/viewGroups.jsp	(.../viewGroups.jsp)	(revision 305246a229ea020cd0677daa6fc7953772f7ed54)
@@ -93,5 +93,5 @@
 		<div id="footer">
 		</div><!--closes footer-->
 
-    </body5>
+    </body>
 </lams:html>
\ No newline at end of file
Index: lams_tool_doku/conf/language/lams/ApplicationResources.properties
===================================================================
diff -u -r66aaa15469871d9f71cafcfc4222ffa90f2d9bb2 -r305246a229ea020cd0677daa6fc7953772f7ed54
--- lams_tool_doku/conf/language/lams/ApplicationResources.properties	(.../ApplicationResources.properties)	(revision 66aaa15469871d9f71cafcfc4222ffa90f2d9bb2)
+++ lams_tool_doku/conf/language/lams/ApplicationResources.properties	(.../ApplicationResources.properties)	(revision 305246a229ea020cd0677daa6fc7953772f7ed54)
@@ -153,4 +153,8 @@
 monitor.summary.date.restriction.set = Date availability has been set
 monitor.summary.date.restriction.removed = Date availability has been removed
 label.comment.textarea.tip = Type your comment here then click on the green tick.
-warning.comment.blank = Comment text is missing.
\ No newline at end of file
+warning.comment.blank = Comment text is missing.
+
+monitoring.gallery.walk.cluster.view = Gallery Walk groups of groups
+monitoring.gallery.walk.cluster.view.none = No groups have reached this activity yet
+monitoring.summary.gallery.walk.cluster.view.button = View Gallery Walk groups of groups
\ No newline at end of file
Index: lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/model/DokumaranSession.java
===================================================================
diff -u -rdbb83a20e36def6c8cb9763e542714cef162e0a2 -r305246a229ea020cd0677daa6fc7953772f7ed54
--- lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/model/DokumaranSession.java	(.../DokumaranSession.java)	(revision dbb83a20e36def6c8cb9763e542714cef162e0a2)
+++ lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/model/DokumaranSession.java	(.../DokumaranSession.java)	(revision 305246a229ea020cd0677daa6fc7953772f7ed54)
@@ -26,6 +26,7 @@
 import org.hibernate.annotations.SortComparator;
 import org.lamsfoundation.lams.etherpad.util.EtherpadUtil;
 import org.lamsfoundation.lams.tool.dokumaran.util.DokumaranSessionComparator;
+import org.lamsfoundation.lams.tool.dokumaran.util.DokumaranSessionNameComparator;
 
 import javax.persistence.*;
 import java.util.Date;
@@ -42,7 +43,8 @@
 @Table(name = "tl_ladoku11_session")
 public class DokumaranSession {
 
-    public static final DokumaranSessionComparator SESSION_NAME_COMPARATOR = new DokumaranSessionComparator();
+    public static final DokumaranSessionComparator SESSION_COMPARATOR = new DokumaranSessionComparator();
+    public static final DokumaranSessionNameComparator SESSION_NAME_COMPARATOR = new DokumaranSessionNameComparator();
 
     @Id
     @Column
@@ -84,7 +86,7 @@
 	    @JoinColumn(name = "source_session_uid") }, inverseJoinColumns = {
 	    @JoinColumn(name = "target_session_uid") })
     @SortComparator(DokumaranSessionComparator.class)
-    private Set<DokumaranSession> galleryWalkCluster = new TreeSet<>(SESSION_NAME_COMPARATOR);
+    private Set<DokumaranSession> galleryWalkCluster = new TreeSet<>(SESSION_COMPARATOR);
 
     // **********************************************************
     // Get/Set methods
Index: lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/service/DokumaranService.java
===================================================================
diff -u -r6ff1966e270c9f86609b19a72f4906419f89670b -r305246a229ea020cd0677daa6fc7953772f7ed54
--- lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/service/DokumaranService.java	(.../DokumaranService.java)	(revision 6ff1966e270c9f86609b19a72f4906419f89670b)
+++ lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/service/DokumaranService.java	(.../DokumaranService.java)	(revision 305246a229ea020cd0677daa6fc7953772f7ed54)
@@ -419,6 +419,10 @@
 	return dokumaranSessionDao.getSessionBySessionId(sessionId);
     }
 
+    public List<DokumaranSession> getDokumaranSessionsByToolContentId(long toolContentId) {
+	return  dokumaranSessionDao.getByContentId(toolContentId);
+    }
+
     @Override
     public String finishToolSession(Long toolSessionId, Long userId) throws DokumaranApplicationException {
 	DokumaranUser user = dokumaranUserDao.getUserByUserIDAndSessionID(userId, toolSessionId);
@@ -506,7 +510,7 @@
 	    }
 	}
 
-	Collections.sort(sessionList, DokumaranSession.SESSION_NAME_COMPARATOR);
+	Collections.sort(sessionList, DokumaranSession.SESSION_COMPARATOR);
 
 	for (DokumaranSession session : sessionList) {
 	    // one new group for one session.
@@ -530,7 +534,7 @@
 
 	    if (!session.getGalleryWalkCluster().isEmpty()) {
 		List<DokumaranSession> cluster = new ArrayList<>(session.getGalleryWalkCluster());
-		Collections.sort(cluster, DokumaranSession.SESSION_NAME_COMPARATOR);
+		Collections.sort(cluster, DokumaranSession.SESSION_COMPARATOR);
 		for (DokumaranSession clusterMember : cluster) {
 		    group.getGalleryWalkClusterMembers()
 			    .put(clusterMember.getSessionId(), clusterMember.getSessionName());
Index: lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/service/IDokumaranService.java
===================================================================
diff -u -rdbb83a20e36def6c8cb9763e542714cef162e0a2 -r305246a229ea020cd0677daa6fc7953772f7ed54
--- lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/service/IDokumaranService.java	(.../IDokumaranService.java)	(revision dbb83a20e36def6c8cb9763e542714cef162e0a2)
+++ lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/service/IDokumaranService.java	(.../IDokumaranService.java)	(revision 305246a229ea020cd0677daa6fc7953772f7ed54)
@@ -177,6 +177,8 @@
      */
     DokumaranSession getDokumaranSessionBySessionId(Long sessionId);
 
+    List<DokumaranSession> getDokumaranSessionsByToolContentId(long toolContentId);
+
     /**
      * If success return next activity's url, otherwise return null.
      */
Index: lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/util/DokumaranSessionComparator.java
===================================================================
diff -u -rdbb83a20e36def6c8cb9763e542714cef162e0a2 -r305246a229ea020cd0677daa6fc7953772f7ed54
--- lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/util/DokumaranSessionComparator.java	(.../DokumaranSessionComparator.java)	(revision dbb83a20e36def6c8cb9763e542714cef162e0a2)
+++ lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/util/DokumaranSessionComparator.java	(.../DokumaranSessionComparator.java)	(revision 305246a229ea020cd0677daa6fc7953772f7ed54)
@@ -7,19 +7,8 @@
 public class DokumaranSessionComparator implements Comparator<DokumaranSession> {
     @Override
     public int compare(DokumaranSession o1, DokumaranSession o2) {
-	if (o1 != null && o2 != null) {
-	    String name1 = o1.getSessionName().replaceAll("\\D+", "");
-	    String name2 = o2.getSessionName().replaceAll("\\D+", "");
-	    if (name1.length() == 0 || name2.length() == 0) {
-		return name1.compareTo(name2);
-	    }
-	    Long num1 = Long.parseLong(name1);
-	    Long num2 = Long.parseLong(name2);
-	    return num1.compareTo(num2);
-	} else if (o1 != null) {
-	    return 1;
-	} else {
-	    return -1;
-	}
+	String name1 = o1.getSessionName();
+	String name2 = o2.getSessionName();
+	return DokumaranSessionNameComparator.compareSessionNames(name1, name2);
     }
 }
\ No newline at end of file
Index: lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/util/DokumaranSessionNameComparator.java
===================================================================
diff -u
--- lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/util/DokumaranSessionNameComparator.java	(revision 0)
+++ lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/util/DokumaranSessionNameComparator.java	(revision 305246a229ea020cd0677daa6fc7953772f7ed54)
@@ -0,0 +1,32 @@
+package org.lamsfoundation.lams.tool.dokumaran.util;
+
+import java.util.Comparator;
+
+public class DokumaranSessionNameComparator implements Comparator<String> {
+    @Override
+    public int compare(String name1, String name2) {
+	return compareSessionNames(name1, name2);
+    }
+
+    public static int compareSessionNames(String name1, String name2) {
+	name1 = name1.toLowerCase();
+	name2 = name2.toLowerCase();
+	String nameWithoutNumbers1 = name1.replaceAll("\\d+", "");
+	String nameWithoutNumbers2 = name2.replaceAll("\\d+", "");
+	if (!nameWithoutNumbers1.equals(nameWithoutNumbers2)) {
+	    return name1.compareTo(name2);
+	}
+	String numbers1 = name1.replaceAll("\\D+", "");
+	String numbers2 = name2.replaceAll("\\D+", "");
+	if (numbers1.length() == 0 || numbers2.length() == 0) {
+	    return name1.compareTo(name2);
+	}
+	try {
+	    Long num1 = Long.parseLong(numbers1);
+	    Long num2 = Long.parseLong(numbers2);
+	    return num1.compareTo(num2);
+	} catch (Exception e) {
+	    return name1.compareTo(name2);
+	}
+    }
+}
\ No newline at end of file
Index: lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/web/controller/MonitoringController.java
===================================================================
diff -u -reccd6838790a4369b6788e48fb5ae5851622fe35 -r305246a229ea020cd0677daa6fc7953772f7ed54
--- lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/web/controller/MonitoringController.java	(.../MonitoringController.java)	(revision eccd6838790a4369b6788e48fb5ae5851622fe35)
+++ lams_tool_doku/src/java/org/lamsfoundation/lams/tool/dokumaran/web/controller/MonitoringController.java	(.../MonitoringController.java)	(revision 305246a229ea020cd0677daa6fc7953772f7ed54)
@@ -56,6 +56,7 @@
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
 import org.springframework.web.bind.annotation.*;
 import reactor.core.publisher.Flux;
 
@@ -329,6 +330,20 @@
 	dokumaranService.enableGalleryWalkLearnerEdit(toolContentId);
     }
 
+    @RequestMapping("/showGalleryWalkClusters")
+    private String showGalleryWalkClusters(
+	    @RequestParam(name = AttributeNames.PARAM_TOOL_CONTENT_ID) long toolContentId, Model model) {
+	Map<String, Set<String>> groups = dokumaranService.getDokumaranSessionsByToolContentId(toolContentId).stream()
+		.collect(Collectors.toMap(DokumaranSession::getSessionName,
+			session -> session.getGalleryWalkCluster().stream().collect(
+				Collectors.mapping(DokumaranSession::getSessionName, Collectors.toCollection(
+					() -> new TreeSet<>(DokumaranSession.SESSION_NAME_COMPARATOR)))),
+			(session1Cluster, session2Cluster) -> session1Cluster,
+			() -> new TreeMap<>(DokumaranSession.SESSION_NAME_COMPARATOR)));
+	model.addAttribute("groups", groups);
+	return "pages/monitoring/viewGalleryWalkClusters";
+    }
+
     @RequestMapping("/ae")
     private String tblApplicationExcercise(HttpServletRequest request, HttpServletResponse response)
 	    throws EtherpadException {
Index: lams_tool_doku/web/pages/monitoring/summary.jsp
===================================================================
diff -u -r66aaa15469871d9f71cafcfc4222ffa90f2d9bb2 -r305246a229ea020cd0677daa6fc7953772f7ed54
--- lams_tool_doku/web/pages/monitoring/summary.jsp	(.../summary.jsp)	(revision 66aaa15469871d9f71cafcfc4222ffa90f2d9bb2)
+++ lams_tool_doku/web/pages/monitoring/summary.jsp	(.../summary.jsp)	(revision 305246a229ea020cd0677daa6fc7953772f7ed54)
@@ -51,6 +51,10 @@
 		width: 100%;
 	}
 
+	.doku-monitoring-summary #gallery-walk-show-clusters {
+		margin-top: 20px;
+	}
+
 	.doku-monitoring-summary #gallery-walk-learner-edit {
 		margin-top: 20px;
 		margin-bottom: 20px;
@@ -392,6 +396,9 @@
 		});
 	}
 
+	function openGalleryWalkClusters(){
+		window.open('<lams:WebAppURL/>monitoring/showGalleryWalkClusters.do?toolContentID=${dokumaran.contentId}', '_blank');
+	}
 
 	function enableGalleryWalkLearnerEdit(){
 		if (!confirm('<fmt:message key="monitoring.summary.gallery.walk.learner.edit.confirm" />')) {
@@ -532,8 +539,18 @@
 
 				<br>
 
+				<button id="gallery-walk-show-clusters" type="button"
+						class="btn btn-default
+							${dokumaran.galleryWalkClusterSize > 0 and dokumaran.galleryWalkStarted ? '' : 'hidden'}"
+						onClick="javascript:openGalleryWalkClusters()">
+					<i class="fa fa-external-link" aria-hidden="true"></i>
+					<fmt:message key="monitoring.summary.gallery.walk.cluster.view.button" />
+				</button>
+
+				<br>
+
 				<button id="gallery-walk-learner-edit" type="button"
-						class="btn btn-default ${not dokumaran.galleryWalkEditEnabled and (dokumaran.galleryWalkStarted or dokumaran.galleryWalkFinished) ? '' : 'hidden'}"
+						class="btn btn-default ${not dokumaran.galleryWalkEditEnabled and dokumaran.galleryWalkStarted? '' : 'hidden'}"
 						onClick="javascript:enableGalleryWalkLearnerEdit()">
 					<fmt:message key="monitoring.summary.gallery.walk.learner.edit" />
 				</button>
Index: lams_tool_doku/web/pages/monitoring/summary5.jsp
===================================================================
diff -u -rfe19797ec82718905555353176ed719bec11043e -r305246a229ea020cd0677daa6fc7953772f7ed54
--- lams_tool_doku/web/pages/monitoring/summary5.jsp	(.../summary5.jsp)	(revision fe19797ec82718905555353176ed719bec11043e)
+++ lams_tool_doku/web/pages/monitoring/summary5.jsp	(.../summary5.jsp)	(revision 305246a229ea020cd0677daa6fc7953772f7ed54)
@@ -49,6 +49,10 @@
 		width: 100%;
 	}
 
+	.doku-monitoring-summary #gallery-walk-show-clusters {
+		margin-top: 20px;
+	}
+
 	.doku-monitoring-summary #gallery-walk-learner-edit {
 		margin-top: 20px;
 		margin-bottom: 20px;
@@ -340,7 +344,11 @@
 		});
 	}
 
+	function openGalleryWalkClusters(){
+		window.open('<lams:WebAppURL/>monitoring/showGalleryWalkClusters.do?toolContentID=${dokumaran.contentId}', '_blank');
+	}
 
+
 	function enableGalleryWalkLearnerEdit(){
 		if (!confirm('<fmt:message key="monitoring.summary.gallery.walk.learner.edit.confirm" />')) {
 			return;
@@ -479,8 +487,18 @@
 
 						<br>
 
+						<button id="gallery-walk-show-clusters" type="button"
+								class="btn btn-primary
+						        	   ${dokumaran.galleryWalkClusterSize > 0 and dokumaran.galleryWalkStarted ? '' : 'd-none'}"
+								onClick="javascript:openGalleryWalkClusters()">
+							<i class="fa-solid fa-arrow-up-right-from-square"></i>
+							<fmt:message key="monitoring.summary.gallery.walk.cluster.view.button" />
+						</button>
+
+						<br>
+
 						<button id="gallery-walk-learner-edit" type="button"
-								class="btn btn-secondary ${not dokumaran.galleryWalkEditEnabled and (dokumaran.galleryWalkStarted or dokumaran.galleryWalkFinished) ? '' : 'd-none'}"
+								class="btn btn-secondary ${not dokumaran.galleryWalkEditEnabled and dokumaran.galleryWalkStarted ? '' : 'd-none'}"
 								onClick="javascript:enableGalleryWalkLearnerEdit()">
 							<fmt:message key="monitoring.summary.gallery.walk.learner.edit" />
 						</button>
Index: lams_tool_doku/web/pages/monitoring/viewGalleryWalkClusters.jsp
===================================================================
diff -u
--- lams_tool_doku/web/pages/monitoring/viewGalleryWalkClusters.jsp	(revision 0)
+++ lams_tool_doku/web/pages/monitoring/viewGalleryWalkClusters.jsp	(revision 305246a229ea020cd0677daa6fc7953772f7ed54)
@@ -0,0 +1,84 @@
+<%--
+Copyright (C) 2005 LAMS Foundation (http://lamsfoundation.org)
+License Information: http://lamsfoundation.org/licensing/lams/2.0/
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License version 2 as 
+  published by the Free Software Foundation.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
+  USA
+
+  http://www.gnu.org/licenses/gpl.txt
+--%>
+<!DOCTYPE html>
+<%@ include file="/common/taglibs.jsp"%>
+
+<c:set var="title"><fmt:message key="monitoring.gallery.walk.cluster.view"/></c:set>
+
+<lams:html>
+	<lams:head>
+		<title><fmt:message key="monitoring.gallery.walk.cluster.view"/></title>
+
+		<link rel="stylesheet" href="<lams:LAMSURL/>css/bootstrap5.custom.css">
+		<link rel="stylesheet" href="<lams:LAMSURL/>includes/font-awesome6/css/all.css">
+		<link rel="stylesheet" href="<lams:LAMSURL/>css/components.css">
+		<style>
+			.group-item {
+				min-width: 20rem;
+			}
+			body.component table.table {
+				margin-bottom: 0;
+			}
+			body.component table.table tbody td {
+				border-bottom: none !important;
+			}
+		</style>
+		<script type="text/javascript" src="<lams:LAMSURL/>includes/javascript/jquery.js"></script>
+	</lams:head>
+
+	<body class="component">
+	<lams:Page5 type="monitor" title="${title}">
+
+		<div class="d-flex flex-wrap">
+			<c:choose>
+				<c:when test="${empty groups}">
+					<fmt:message key="monitoring.gallery.walk.cluster.view.none"/>
+				</c:when>
+				<c:otherwise>
+					<c:forEach items="${groups}" var="group" varStatus="groupCounter">
+						<div class="group-item border border-secondary pt-1 mb-4 me-2">
+							<h4 class="text-center">
+								<c:out value="${group.key}" />
+							</h4>
+							<table class="cluster-table table table-condensed table-striped">
+								<c:forEach items="${group.value}" var="linkedGroup">
+									<tr>
+										<td>
+											<span class="loffset5">
+												<c:out value="${linkedGroup}" />
+											</span>
+										</td>
+									</tr>
+								</c:forEach>
+							</table>
+						</div>
+					</c:forEach>
+				</c:otherwise>
+			</c:choose>
+		</div>
+		<div id="footer"></div>
+	</lams:Page5>
+
+	<div id="footer">
+	</div><!--closes footer-->
+
+	</body>
+</lams:html>
\ No newline at end of file