Hey there, i would probably make the manager as an actor that has references for all of the squad members (which should be characters i would say). From that you need to expose information from the squad members to the manager so that he can issue the commands to each individual behavior tree, stuff like what state is he in, what enemies does he see, etc. I’m giving general advice since i don’t really know what type of game you want to make and what the squad is supposed to do.