[fysiks]

If the admin's SteamID is in the list, they will be shown two menus (the SteamID specific one and then the User one overwrites it).

Also, to improve efficiency, I would consider using a Trie for the SteamIDs. You will no longer need to use a loop to determine if they are in the list, it would change your loop to an if statement. This would make it easier solve the problem above because you could simply to else ifs for everything else.