Duo GM?

Hey, I asked this in a different sub-forum but I wasn't sure if it was the right place, so I've cross-posted it here. Is it possible to have two GMs for a single game? In particular I'm looking at a Song of Ice and Fire Roleplay game? Is there some sort of mechanic withing R20 to do so? And if there isn't a mechanic, is there a way to make it possible though..I suppose unorthodox methods? Let me know please!

I answered your other post, <a href="https://app.roll20.net/forum/post/1180057/duo-gm" rel="nofollow">https://app.roll20.net/forum/post/1180057/duo-gm</a> Posting it one time was enough. No need to cross post here.