diff --git a/code/ryzom/tools/server/ryzom_ams/ams_lib/translations/en.ini b/code/ryzom/tools/server/ryzom_ams/ams_lib/translations/en.ini
index 2578cdf7a..073e274cc 100644
--- a/code/ryzom/tools/server/ryzom_ams/ams_lib/translations/en.ini
+++ b/code/ryzom/tools/server/ryzom_ams/ams_lib/translations/en.ini
@@ -36,6 +36,7 @@ add_to_group_success = "The user has been added to the group!"
 user_already_added = "The user is already part of the group!"
 group_not_existing = "The group doesn't exist!"
 user_not_existing = "The user doesn't seem to exist"
+not_mod_or_admin = "You can only add Moderators or Admins!"
 
 [sgroup_list]
 group_success = "The group has been created!"
diff --git a/code/ryzom/tools/server/ryzom_ams/ams_lib/translations/fr.ini b/code/ryzom/tools/server/ryzom_ams/ams_lib/translations/fr.ini
index a62cc8004..81d234233 100644
--- a/code/ryzom/tools/server/ryzom_ams/ams_lib/translations/fr.ini
+++ b/code/ryzom/tools/server/ryzom_ams/ams_lib/translations/fr.ini
@@ -36,6 +36,7 @@ add_to_group_success = "ce user est ajoute sur la groupe!"
 user_already_added = "cet user est deja membre de la groupe!"
 group_not_existing = "cet Groupe n' existe pas!"
 user_not_existing = "cet user n'existe pas"
+not_mod_or_admin = "C'est possible d'ajoute seulement des mods et admins!"
 
 [sgroup_list]
 group_success = "le group est cree!"
diff --git a/code/ryzom/tools/server/ryzom_ams/www/html/func/add_user_to_sgroup.php b/code/ryzom/tools/server/ryzom_ams/www/html/func/add_user_to_sgroup.php
index cd6a4b0bb..3eb79b928 100644
--- a/code/ryzom/tools/server/ryzom_ams/www/html/func/add_user_to_sgroup.php
+++ b/code/ryzom/tools/server/ryzom_ams/www/html/func/add_user_to_sgroup.php
@@ -9,7 +9,12 @@ function add_user_to_sgroup(){
             $id = filter_var($_POST['target_id'],FILTER_SANITIZE_NUMBER_INT);
             $user_id = WebUsers::getId($name);
             if ($user_id != ""){
-                $result['RESULT_OF_ADDING'] = Support_Group::addUserToSupportGroup($user_id, $id);
+                if (Ticket_User::constr_ExternId($user_id)->getPermission()>1){
+                    $result['RESULT_OF_ADDING'] = Support_Group::addUserToSupportGroup($user_id, $id);
+                }else{
+                    $result['RESULT_OF_ADDING'] = "NOT_MOD_OR_ADMIN";
+                }
+            
             }else{
                 $result['RESULT_OF_ADDING'] = "USER_NOT_EXISTING";
             }
diff --git a/code/ryzom/tools/server/ryzom_ams/www/html/sql/DBScheme.png b/code/ryzom/tools/server/ryzom_ams/www/html/sql/DBScheme.png
index c5e8da651..1125a5720 100644
Binary files a/code/ryzom/tools/server/ryzom_ams/www/html/sql/DBScheme.png and b/code/ryzom/tools/server/ryzom_ams/www/html/sql/DBScheme.png differ
diff --git a/code/ryzom/tools/server/ryzom_ams/www/html/sql/install.php b/code/ryzom/tools/server/ryzom_ams/www/html/sql/install.php
index 33277fdb8..36c2c7406 100644
--- a/code/ryzom/tools/server/ryzom_ams/www/html/sql/install.php
+++ b/code/ryzom/tools/server/ryzom_ams/www/html/sql/install.php
@@ -186,6 +186,7 @@
           `Author` INT UNSIGNED NOT NULL ,
           `Content` INT UNSIGNED NOT NULL ,
           `Timestamp` TIMESTAMP NULL ,
+          `Hidden` TINYINT(1) NULL DEFAULT 0 ,
           PRIMARY KEY (`TReplyId`) ,
           INDEX `fk_ticket_reply_ticket_idx` (`Ticket` ASC) ,
           INDEX `fk_ticket_reply_ams_user_idx` (`Author` ASC) ,
diff --git a/code/ryzom/tools/server/ryzom_ams/www/html/sql/ticketsql.sql b/code/ryzom/tools/server/ryzom_ams/www/html/sql/ticketsql.sql
index 137a823c3..cbfabf301 100644
--- a/code/ryzom/tools/server/ryzom_ams/www/html/sql/ticketsql.sql
+++ b/code/ryzom/tools/server/ryzom_ams/www/html/sql/ticketsql.sql
@@ -145,6 +145,7 @@ CREATE  TABLE IF NOT EXISTS `mydb`.`ticket_reply` (
   `Author` INT UNSIGNED NOT NULL ,
   `Content` INT UNSIGNED NOT NULL ,
   `Timestamp` TIMESTAMP NULL ,
+  `Hidden` TINYINT(1) NULL DEFAULT 0 ,
   PRIMARY KEY (`TReplyId`) ,
   INDEX `fk_ticket_reply_ticket_idx` (`Ticket` ASC) ,
   INDEX `fk_ticket_reply_ams_user_idx` (`Author` ASC) ,
diff --git a/code/ryzom/tools/server/ryzom_ams/www/html/sql/ticketsystemmodel.mwb b/code/ryzom/tools/server/ryzom_ams/www/html/sql/ticketsystemmodel.mwb
index a605c7a19..d3e0aec36 100644
Binary files a/code/ryzom/tools/server/ryzom_ams/www/html/sql/ticketsystemmodel.mwb and b/code/ryzom/tools/server/ryzom_ams/www/html/sql/ticketsystemmodel.mwb differ
diff --git a/code/ryzom/tools/server/ryzom_ams/www/html/templates/show_sgroup.tpl b/code/ryzom/tools/server/ryzom_ams/www/html/templates/show_sgroup.tpl
index 6ed551bfc..9201ca535 100644
--- a/code/ryzom/tools/server/ryzom_ams/www/html/templates/show_sgroup.tpl
+++ b/code/ryzom/tools/server/ryzom_ams/www/html/templates/show_sgroup.tpl
@@ -86,6 +86,10 @@
 		<div class="alert alert-error">
 			{$user_not_existing}
 		</div>
+		{else if isset($RESULT_OF_ADDING) and $RESULT_OF_ADDING eq "NOT_MOD_OR_ADMIN"}
+		<div class="alert alert-error">
+			{$not_mod_or_admin}
+		</div>
 		{/if}
 		</form>