Okay, so when a player enters a team, they get teleported to their box, and are ready to fight.
I watched a tutorial on how to make the team selecters.
I have found a solution to the problem, probably not the most optimal one, but it works.
I removed the class selectors that was on top of the player spawner, an moved them out a little with more volume.
They still spawn on team one, but now they change their team to the customized “start”.
I removed team 6, so now i have 5 teams, and the 5th is the custom.