in the cinemetic for my map, there is a tower with some units and a hero around the tower. when one of my camera's go to the view near the tower in the cinemetic, i would like the hero to go up to the tower's entrance, and then i want the group of units to go up the the tower entrance and continueselly keep attacking the entrance of the tower with a text message above the hero saying, "ATTACK THE GATE!". also, with the cinemetic to keep playing while the units are continueselly attacking the tower entrance.
how would i setup my line of triggers to do this in the cinemetic at the following point? | 
