rigidbody on parent has to effect the child players but not the child camera's attatched to the players

i have a rigidbody component on a parent object the parent has two childs those are the players each player has a player body and each player body has an camera the players need to move in sync with eachother but one or the other is hidden (you can change wich one with tab) the camera's need to move with the players that's why i have it as an child of the player but because the camara is now also a child of the highest parent it is effected by the rigidbody and falls into the void is there anyway i can fix this

P.S. sorry for the bad english