I just wanted to know how to get your second controller into a locked lobby for boosting. Theater mode doesn't allow me to have more than on player in the party, but yet, I see people with [Gamertag here](2), which shows that they are playing with a second controller, obviously for boosting. Can someone give me a tutorial to getting 2 controllers into a closed lobby using the "pressing X and O in theater mode glitch"?

Thanks in advance