Question Multiplayer Zombie Collider with Rooms

Hello, I have recently started creating online multiplayer game with zombies and stuff my question regarding making those zombie collider with each other and in the same time doesn't collider with other zombies from different rooms as I am using unity as a server(console build) and setting them to collider with each other might lead to different room zombie to collider with each other that why I am looking for a solution to provide collision but within the room zombie only.
Thanks in advance.