showing GUI for all players

[Cherrykao]

according to my understanding, GUI's are clientside. i've been scratching my head for a while on how I could show a specific GUI for all players no matter where they are on the server.

In a specific level, a staff player chats "/commands" to bring up a GUI which has buttons with commands. On one of the buttons, he can click on it and it should show a GUI at the upper right hand corner of the screen for everyone on the server. This new GUI which appears has a button that allows players to click on it to warp into the room. This is like an event warper.

I have the actual code in a CLASS and the CLASS is attached to an NPC in a level using the "join" function: join staffcommand;

The script is around 500-700 lines of codes, so I don't think i'll post the code here. I'm just curious on how to get the GUI to show for everyone on the server if this is possible.