[Joe Staff]

You should also make it have a max amount of players shown at once, and let for multiple pages (page 1 would show players 0-20, page 2 would show 21-30, etc.) If you need an example on how to do that, I made an admin script back when GUIs were new.

Example Admin Panel Using Dialogs v2
( ShowPlayerList(playerid) -- Line 172 )