diff --git a/src/main/java/cm/soungui/guacamole/ext/wallix/sync/Wallix.java b/src/main/java/cm/soungui/guacamole/ext/wallix/sync/Wallix.java
index 8c10a5d..250108b 100644
--- a/src/main/java/cm/soungui/guacamole/ext/wallix/sync/Wallix.java
+++ b/src/main/java/cm/soungui/guacamole/ext/wallix/sync/Wallix.java
@@ -11,6 +11,7 @@ import java.security.cert.X509Certificate;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
+import java.util.Map;
 import java.util.Set;
 
 import javax.net.ssl.SSLContext;
@@ -258,6 +259,25 @@ public class Wallix {
 		return buffer.toString();
 	}
 	
+	public Map<String, Set<String>> getAuthorizations() throws Exception {
+		String output = get("/authorizations?fields=user_group,target_group");
+		
+		ObjectMapper objectMapper = new ObjectMapper();
+        JsonNode jsonNode = objectMapper.readTree(output);
+        Map<String, Set<String>> result = new HashMap<>();
+        
+        jsonNode.elements().forEachRemaining((e) -> {
+        	String targetName = e.findValue("target_group").asText();
+        	if (! result.containsKey(targetName)) {
+        		result.put(targetName, new HashSet<>());
+        	}
+        	Set<String> groups = result.get(targetName);
+        	groups.add(e.findValue("user_group").asText());
+        });
+		
+		return result;
+	}
+	
 	public final class API {
 	
 		public static final String ATTRIBUTE_USER_DISABLED = "is_disabled";
diff --git a/src/main/java/cm/soungui/guacamole/ext/wallix/sync/WallixConfigSynchronizer.java b/src/main/java/cm/soungui/guacamole/ext/wallix/sync/WallixConfigSynchronizer.java
index 3d5b0b0..a75da3d 100644
--- a/src/main/java/cm/soungui/guacamole/ext/wallix/sync/WallixConfigSynchronizer.java
+++ b/src/main/java/cm/soungui/guacamole/ext/wallix/sync/WallixConfigSynchronizer.java
@@ -11,6 +11,7 @@ import org.apache.guacamole.environment.LocalEnvironment;
 
 import cm.soungui.guacamole.ext.wallix.sync.db.Connection;
 import cm.soungui.guacamole.ext.wallix.sync.db.DB;
+import cm.soungui.guacamole.ext.wallix.sync.db.Entity.EntityType;
 import cm.soungui.guacamole.ext.wallix.sync.db.TargetGroup;
 import cm.soungui.guacamole.ext.wallix.sync.db.User;
 import cm.soungui.guacamole.ext.wallix.sync.db.UserGroup;
@@ -31,7 +32,6 @@ public class WallixConfigSynchronizer implements Runnable {
 	public void run() {
 		while (true) {
 			try {
-				System.out.println("Fetching config");
 				synchronizeUsers();
 				synchronizeUserGroups();
 				synchronizeTargetGroups();
@@ -116,6 +116,7 @@ public class WallixConfigSynchronizer implements Runnable {
 		DB db = DB.getInstance();
 
 		Set<TargetGroup> wallixTargetGroups = Wallix.getInstance().getTargetGroups();
+		Map<String, Set<String>> members = Wallix.getInstance().getAuthorizations();
 		
 		// Fetch targets from Wallix
 		for (TargetGroup wallixGroup : wallixTargetGroups) {
@@ -176,10 +177,25 @@ public class WallixConfigSynchronizer implements Runnable {
 					}
 				}
 			}
+			
+			Set<String> membersNames = members.get(wallixGroup.getName());
+			synchronizeAuthorizations(dbTargetGroup, membersNames);
 		}
 		
 	}
 	
+	private void synchronizeAuthorizations(TargetGroup targetGroup, Set<String> members) throws GuacamoleException, Exception {
+		DB db = DB.getInstance();
+		Set<Integer> newMembersIds = db.getEntitiesId(members, EntityType.USER_GROUP);
+		Set<Integer> currentMembersIds = db.getTargetGroupMembersIds(targetGroup.getId());
+		for (int memberId : newMembersIds.stream().filter(memberId -> ! currentMembersIds.contains(memberId)).toList()) {
+			db.addTargetGroupMember(targetGroup.getId(), memberId);
+		}
+		for (int memberId : currentMembersIds.stream().filter(id -> ! newMembersIds.contains(id)).toList()) {
+			db.removeTargetGroupMember(targetGroup.getId(), memberId);
+		}
+	}
+	
 	private void printWallixVersion() throws Exception {
 		Wallix wallix = Wallix.getInstance();
 		System.out.println(wallix.getVersion());
diff --git a/src/main/java/cm/soungui/guacamole/ext/wallix/sync/db/DB.java b/src/main/java/cm/soungui/guacamole/ext/wallix/sync/db/DB.java
index 7cea6cb..584cdbe 100644
--- a/src/main/java/cm/soungui/guacamole/ext/wallix/sync/db/DB.java
+++ b/src/main/java/cm/soungui/guacamole/ext/wallix/sync/db/DB.java
@@ -181,7 +181,7 @@ public class DB {
 			entity.setId(rs.getInt("entity_id"));
 			entity.setName(rs.getString("name"));
 			
-			if (entity.getType()==EntityType.GROUP) {
+			if (entity.getType()==EntityType.USER_GROUP) {
 				UserGroup group = (UserGroup) entity;
 				group.getMembers().addAll(getGroupMembers(entity.getName()));
 			}
@@ -254,7 +254,7 @@ public class DB {
 		}
 		stmt.close();
 		
-		stmt = connection.prepareStatement("delete from guacamole_user_group_member values (?, ?)");
+		stmt = connection.prepareStatement("delete from guacamole_user_group_member where user_group_id=? and member_entity_id=?");
 		for (int id : toDelete) {
 			stmt.setInt(1, group.getGroupId());
 			stmt.setInt(2, id);
@@ -581,4 +581,74 @@ public class DB {
 		});
 	}
 
+	public void addTargetGroupMember(int targetGroupId, int memberEntityId) throws SQLException, GuacamoleException {		
+		DB db = DB.getInstance();
+		Connection connection = db.getMySQLConnection();
+		
+		PreparedStatement stmt = connection
+				.prepareStatement("insert into guacamole_connection_group_permission values (?, ?, 'READ')");
+		stmt.setInt(1, memberEntityId);
+		stmt.setInt(2, targetGroupId);
+		stmt.executeUpdate();
+	}
+	
+	public int getUserGroupsId(String name) throws GuacamoleException, SQLException {
+		DB db = DB.getInstance();
+		Connection connection = db.getMySQLConnection();
+		PreparedStatement stmt = connection
+				.prepareStatement("select entity_id from guacamole_entity where type='USER_GROUP' and name=?");
+		stmt.setString(1, name);
+		ResultSet rs = stmt.executeQuery();
+		
+		while (rs.next()) {
+			return rs.getInt(1);
+		}
+		
+		throw new GuacamoleException("User group not found");
+	}
+	
+	public Set<Integer> getEntitiesId(Set<String> memberNames, Entity.EntityType type) throws GuacamoleException, SQLException {
+		DB db = DB.getInstance();
+		Connection connection = db.getMySQLConnection();
+		PreparedStatement stmt = connection
+				.prepareStatement("select entity_id from guacamole_entity where type=? and name in (?)");
+		StringBuffer formattedNamesList = new StringBuffer()
+				.append(String.join("','", memberNames));
+		Set<Integer> result = new HashSet<>();
+		stmt.setString(1, type.toString());
+		stmt.setString(2, formattedNamesList.toString());
+		ResultSet rs = stmt.executeQuery();
+		while (rs.next()) {
+			result.add(rs.getInt(1));
+		}
+		
+		return result;
+	}
+
+	public Set<Integer> getTargetGroupMembersIds(int id) throws SQLException, GuacamoleException {
+		DB db = DB.getInstance();
+		Connection connection = db.getMySQLConnection();
+		PreparedStatement stmt = connection
+				.prepareStatement("select entity_id from guacamole_connection_group_permission where connection_group_id=?");
+		Set<Integer> result = new HashSet<>();
+		stmt.setInt(1, id);
+		ResultSet rs = stmt.executeQuery();
+		while (rs.next()) {
+			result.add(rs.getInt(1));
+		}
+		
+		return result;
+	}
+
+	public void removeTargetGroupMember(int id, int memberId) throws GuacamoleException, SQLException {
+		DB db = DB.getInstance();
+		Connection connection = db.getMySQLConnection();
+		
+		PreparedStatement stmt = connection
+				.prepareStatement("delete from guacamole_connection_group_permission where connection_group_id=? and entity_id=?");
+		stmt.setInt(1, id);
+		stmt.setInt(2, memberId);
+		stmt.executeUpdate();
+	}
+
 }
diff --git a/src/main/java/cm/soungui/guacamole/ext/wallix/sync/db/Entity.java b/src/main/java/cm/soungui/guacamole/ext/wallix/sync/db/Entity.java
index 603f577..6185900 100644
--- a/src/main/java/cm/soungui/guacamole/ext/wallix/sync/db/Entity.java
+++ b/src/main/java/cm/soungui/guacamole/ext/wallix/sync/db/Entity.java
@@ -2,7 +2,7 @@ package cm.soungui.guacamole.ext.wallix.sync.db;
 
 public class Entity {
 	
-	public static enum EntityType { USER, GROUP };
+	public static enum EntityType { USER, USER_GROUP };
 	
 	private int id;
 	
diff --git a/src/main/java/cm/soungui/guacamole/ext/wallix/sync/db/UserGroup.java b/src/main/java/cm/soungui/guacamole/ext/wallix/sync/db/UserGroup.java
index 13b3141..20b9ed5 100644
--- a/src/main/java/cm/soungui/guacamole/ext/wallix/sync/db/UserGroup.java
+++ b/src/main/java/cm/soungui/guacamole/ext/wallix/sync/db/UserGroup.java
@@ -11,7 +11,7 @@ public class UserGroup extends Entity {
 	
 	@Override
 	public EntityType getType() {
-		return EntityType.GROUP;
+		return EntityType.USER_GROUP;
 	}
 	
 	@Override