How to set collision channel properly?

Hey everyone,
I am working on my random game in my free time to get some experience and I want to make a car with doors attached to socket. So it is two static meshes. Now my problem is, how to make the doors ignore colliding with the car body while colliding with all other cars. In terms of multiplayer, all other cars will be pawns as well, so I cannot just ignore the pawn channel. Any ideas? Is there anything I could do to tell the doors to not interact only with the car they are attached to? Thank you a lot for any advice!