WellyWales: What "rooms"? If you mean discussion boards, they are controlled by the discussion board system - the main moderator can add secondary moderators of his choice. There cannot be two main moderators of a discussion board.
(hide) If you want to save on bandwidth you can reduce the amount of information that shows up in your pages in the Settings. Try changing the number of games in the main page and the number of messages per page. (pauloaguia) (show all tips)