3 or more teams

[TheLaGmAn]

A thing i love is to have more than 2 teams when playing RTS, for example, 2 vs 2 vs 2,
is there any way to make this possible thru modding?

I've seen a mod that enables the FFA mode, maybe using that but enabling diplomacy in some teams and moving the spawn points so the teams spawn on each corner?

Or maybe there is a way to use the regular mode and just add another team (so the selection in the game-menu is easy, like, 4 teams, one of each of one army) ?