How do you make a team startercharacter?

Hello everyone, I wanted to drop in and ask a quick scripting question. I've looked online and on this site as well and cannot find what I'm looking for

I'm trying to make a SCP Black Ops fangame, with chaos insurgency and mobile task force, I have characters already made but I need a script that puts them on a certain team. I'm newish to scripting so please just give me a script, thank you! very thanks