Dynamic Spawns

From MovieBattles II Wiki

As you may have seen, many maps in Movie Battles have moving spawn points which toggle when a certain action is taken, for example if an objective is completed or maybe just if a door has been unlocked. Movable spawns allow for some very interesting scenarios, and should only be used with some thought, but, if used correctly they can really make maps more popular and balanced.

Placing the spawns

Secondary spawns are placed in the same way as primary ones, just place a info_player_siegeteam1 or info_player_siegeteam2 where you want the secondary spawns to be, remember that u don't need so many as for the primary ones because usually the whole team doesn't respawn at once, but you should still place as many as possible.

The only difference between secondary and primary spawns is that on the secondaries, you should add the key startoff with a value of 1. This will disable the spawns until they are used, that means until they are activated by something, not literally "used" by the player.

Making it work

Now the only thing needed is an activator, this could be a trigger, or whatever which fires both the first set of spawns and the second set of spawns at the same time and that means that it has to be linked to every single info_player_siegeteam1 or info_player_siegeteam2 you want to swap, this will turn the first set off and the second set on.