How do you tell who is the host?

Hi, I’m not sure who I am. We’ve always kind of worked hand in hand and never stopped to identify ourselves and we know what “roles” we have or whatever but aren’t we all kind of the host in a way? It’s hard to tell if we really have a “host” or if we just share a body. How do you know or how did you figure out who’s really the host or what that process looks like? Sorry i don’t get out much and writing is hard, thank you