Sharing GM and Maps

I'm sorry if this was asked. im also sorry if this is the wrong place to post this query, but i just recently set up a big "Round Robin" style DnD session where each payer takes turns being GM. Ive promoted the first person so they can make maps. My question is this; as the Main GM, will i still be able to see any of his hidden stuff, ie Gm layer, fog of war, dynamic lighting, etc)? I'm worried that it would spoil the game for me if i see all of his stuff.

When you are logged into the game, there is a button to "Rejoin as Player".  Right click that button, save the url, and create a favorite of that url in your browser so that you can join directly as a player.  Then you won't be seeing any of the GM stuff unless you log in the normal way or hit the "Rejoin as GM" button while in game.