I want to have a spawner that activates when Blue or Orange touches a trigger below it. This for a map that the two players go against each other. I don't know where to start.

I guess you mean you want only player 1 to activate a trigger, and only player 2 for another?

Just create a trigger_playerteam and give it the output "OnStartTouchBluePlayer/OnStartTouchOrangePlayer" respectively.