Instructions
Download an admin script by searching for "Admin" in the Roblox database.
Open Roblox studios.
Click "Insert" and search for your admin command script under My Models.
Access the admin script by clicking on the name of the file under Workspace to the right of the screen.
Locate line two of the script.
Replace "Your Name Here" with the name of your character model. The result should read "adminlist = {"Playername"}."
Save the changes. These alterations will give you the ability to ban other players in all of your games.
Leave the game and host a new game to access administrator functions.