First of all, I'm sorry. I use a translator

I'm Newbie with a question (110 Hours!)
I usually play the Mortal Empire of this game. But the game gets slow because my computer is not good..... So I want to play with only a few factions in the mortar. Is there a mode that makes it possible? For example, only Factions I chose participate on the map

I think that this is possible enough. But I couldn't find it because I couldn't speak English....