(this is not a game mode but it can be added to one)
fist when you put in the code. go to the workshop and change the name in 2 part I have set it to null but you can set it to anyones username (it must be correct with no miss placed cappitals).
if you want to ban more the 1 person just copy 2 part then past it but remember to change the names.
THIS WILL NOT BAN THEM THIS WILL JUST MAKE THEM WANT TO LEAVE.