one bit of advice i will give you apart from the common sense of not shooting through a hedge that you cant see through and maybe having someone standing on the other side, and it doesnt matter if you stand opposite and make good communication, never stand where a gun can face you, always behind.
when your friend is holding the shotty & if he is right handed, stand to his right and slightly back a bit, in the 5 oclock position. as he should never have to point the gun this way when waiting for a bolter or if he pulls the trigger by accident, or slips, as these things can happen, and if