diff --git a/src/main/java/envoy/server/Startup.java b/src/main/java/envoy/server/Startup.java
index 0811bbb..bdcac7d 100755
--- a/src/main/java/envoy/server/Startup.java
+++ b/src/main/java/envoy/server/Startup.java
@@ -11,7 +11,16 @@ import envoy.server.data.PersistenceManager;
 import envoy.server.net.ConnectionManager;
 import envoy.server.net.ObjectMessageProcessor;
 import envoy.server.net.ObjectMessageReader;
-import envoy.server.processors.*;
+import envoy.server.processors.ContactOperationProcessor;
+import envoy.server.processors.ContactsRequestEventProcessor;
+import envoy.server.processors.GroupCreationProcessor;
+import envoy.server.processors.GroupMessageProcessor;
+import envoy.server.processors.IDGeneratorRequestProcessor;
+import envoy.server.processors.LoginCredentialProcessor;
+import envoy.server.processors.MessageProcessor;
+import envoy.server.processors.MessageStatusChangeProcessor;
+import envoy.server.processors.ObjectProcessor;
+import envoy.server.processors.UserStatusChangeProcessor;
 
 /**
  * Starts the server.<br>
@@ -36,6 +45,7 @@ public class Startup {
 		Set<ObjectProcessor<?>> processors = new HashSet<>();
 		processors.add(new LoginCredentialProcessor());
 		processors.add(new MessageProcessor());
+		processors.add(new GroupCreationProcessor());
 		processors.add(new GroupMessageProcessor());
 		processors.add(new MessageStatusChangeProcessor());
 		processors.add(new UserStatusChangeProcessor());
diff --git a/src/main/java/envoy/server/data/GroupMessage.java b/src/main/java/envoy/server/data/GroupMessage.java
index ad9da17..bc9fed7 100644
--- a/src/main/java/envoy/server/data/GroupMessage.java
+++ b/src/main/java/envoy/server/data/GroupMessage.java
@@ -1,9 +1,12 @@
 package envoy.server.data;
 
+import java.util.Date;
 import java.util.Map;
 
 import javax.persistence.ElementCollection;
 import javax.persistence.Entity;
+import javax.persistence.Temporal;
+import javax.persistence.TemporalType;
 
 import envoy.data.MessageBuilder;
 
@@ -22,6 +25,9 @@ public class GroupMessage extends Message {
 	@ElementCollection
 	private Map<Long, envoy.data.Message.MessageStatus> memberMessageStatus;
 
+	@Temporal(TemporalType.TIMESTAMP)
+	protected Date lastStatusChangeDate;
+
 	/**
 	 * The constructor for a database object.
 	 *
@@ -32,13 +38,16 @@ public class GroupMessage extends Message {
 	/**
 	 * Constructs a database groupMessage from a common groupMessage.
 	 *
-	 * @param groupMessage the {@link envoy.data.GroupMessage} to convert into a
-	 *                     database {@link GroupMessage}
+	 * @param groupMessage         the {@link envoy.data.GroupMessage} to convert
+	 *                             into a
+	 *                             database {@link GroupMessage}
+	 * @param lastStatusChangeDate the {@link Date} to set
 	 * @since Envoy Server Standalone v0.1-beta
 	 */
-	public GroupMessage(envoy.data.GroupMessage groupMessage) {
+	public GroupMessage(envoy.data.GroupMessage groupMessage, Date lastStatusChangeDate) {
 		super(groupMessage);
 		memberMessageStatus	= groupMessage.getMemberStatuses();
+		this.lastStatusChangeDate	= lastStatusChangeDate;
 	}
 
 	/**
@@ -76,4 +85,16 @@ public class GroupMessage extends Message {
 	public void setMemberMessageStatus(Map<Long, envoy.data.Message.MessageStatus> memberMessageStatus) {
 		this.memberMessageStatus = memberMessageStatus;
 	}
+
+	/**
+	 * @return the date at which one of the member statuses changed last
+	 * @since Envoy Server Standalone v0.1-beta
+	 */
+	public Date getLastStatusChangeDate() { return lastStatusChangeDate; }
+
+	/**
+	 * @param date the date to set
+	 * @since Envoy Server Standalone v0.1-beta
+	 */
+	public void setLastStatusChangeDate(Date date) { lastStatusChangeDate = date; }
 }
diff --git a/src/main/java/envoy/server/processors/GroupCreationProcessor.java b/src/main/java/envoy/server/processors/GroupCreationProcessor.java
index 7bb71b3..8e4cf1b 100644
--- a/src/main/java/envoy/server/processors/GroupCreationProcessor.java
+++ b/src/main/java/envoy/server/processors/GroupCreationProcessor.java
@@ -1,8 +1,11 @@
 package envoy.server.processors;
 
 import java.io.IOException;
+import java.util.HashSet;
 
+import envoy.event.ElementOperation;
 import envoy.event.GroupCreationEvent;
+import envoy.event.contact.ContactOperationEvent;
 import envoy.server.data.Contact;
 import envoy.server.data.PersistenceManager;
 import envoy.server.net.ConnectionManager;
@@ -25,10 +28,12 @@ public class GroupCreationProcessor implements ObjectProcessor<GroupCreationEven
 	public void process(GroupCreationEvent input, long socketID, ObjectWriteProxy writeProxy) throws IOException {
 		envoy.server.data.Group group = new envoy.server.data.Group();
 		group.setName(input.get());
+		group.setContacts(new HashSet<>());
 		input.getInitialMemberIDs().stream().map(persistenceManager::getUserByID).forEach(group.getContacts()::add);
+		group.getContacts().add(persistenceManager.getContactByID(connectionManager.getUserIdBySocketId(socketID)));
+		group.getContacts().forEach(c -> c.getContacts().add(group));
 		group.getContacts().add(persistenceManager.getUserByID(connectionManager.getUserIdBySocketId(socketID)));
 		persistenceManager.addContact(group);
-		writeProxy.write(socketID, group);
 		group.getContacts()
 			.stream()
 			.map(Contact::getID)
@@ -36,7 +41,7 @@ public class GroupCreationProcessor implements ObjectProcessor<GroupCreationEven
 			.map(connectionManager::getSocketId)
 			.forEach(memberSocketID -> {
 				try {
-					writeProxy.write(memberSocketID, group);
+					writeProxy.write(memberSocketID, new ContactOperationEvent(group.toCommon(), ElementOperation.ADD));
 				} catch (IOException e) {
 					e.printStackTrace();
 				}
diff --git a/src/main/java/envoy/server/processors/GroupMessageProcessor.java b/src/main/java/envoy/server/processors/GroupMessageProcessor.java
index e1815b3..48f1441 100644
--- a/src/main/java/envoy/server/processors/GroupMessageProcessor.java
+++ b/src/main/java/envoy/server/processors/GroupMessageProcessor.java
@@ -1,6 +1,7 @@
 package envoy.server.processors;
 
 import java.io.IOException;
+import java.util.Date;
 
 import javax.persistence.EntityExistsException;
 
@@ -33,7 +34,7 @@ public class GroupMessageProcessor implements ObjectProcessor<GroupMessage> {
 		}
 
 		final var members = PersistenceManager.getInstance().getGroupByID(groupMessage.getRecipientID()).getContacts();
-		for (long i = 0; i < groupMessage.getMemberStatuses().keySet().size(); i++) {
+		for (long i = 0; i < groupMessage.getMemberStatuses().size(); i++) {
 			groupMessage.getMemberStatuses().replace(i, MessageStatus.SENT);
 		}
 		members.forEach(user -> { setMemberStatus(connectionManager, groupMessage, user.getID()); });
@@ -45,9 +46,9 @@ public class GroupMessageProcessor implements ObjectProcessor<GroupMessage> {
 		members.forEach(user -> { sendToMember(connectionManager, groupMessage, user.getID(), writeProxy); });
 
 		try {
-			PersistenceManager.getInstance().addMessage(new envoy.server.data.Message(groupMessage));
+			PersistenceManager.getInstance().addMessage(new envoy.server.data.GroupMessage(groupMessage, new Date()));
 		} catch (EntityExistsException e) {
-			System.err.println("Received a groupMessage with an id that already exists");
+			System.err.println("Received a groupMessage with an ID that already exists");
 		}
 	}