How to trigger mid-point capture into a massive player teleport?

[Seitan]

I'm looking to make something like this:

RED or BLU captures mid point then every player on the map gets teleported to a loot-island location

How do I trigger an event like this?

 

[Grubzer]

Use trigger_teleport or trigger_teleport_relative (One for each team)

You are talking about teleporting the whole team like in hell dimension of plr_hightower_event?