Click to view fullsize & check what is written on the notes on the wall
According to video & screencaps:
Best Male Performance (Rob nominated) will be on act 1.
Looks like Best Kiss (Rob and Kristen nominated) will be on act 5 with Ryan Reynolds and Blake Lively presenting.
The MTV Generation Award (that will go to Reese) will be on act 6. According to the video Rob, Chelsea Handler and Patrick Dempsey will present.