make sure you have solo queue enabled on all 4bots. this remove the party check.
basically leader should be on assist, but not the tank, because when the attack attacks they will follow him into melee. make a healer the leader. then set the other 3 bots on duty, make sure to enable solo queue on those bots and also open the duty window and set it to the dungeon tab for CM, then use the healer to move about the duty, they will follow him and attack what ever he attacks.
basically leader should be on assist, but not the tank, because when the attack attacks they will follow him into melee. make a healer the leader. then set the other 3 bots on duty, make sure to enable solo queue on those bots and also open the duty window and set it to the dungeon tab for CM, then use the healer to move about the duty, they will follow him and attack what ever he attacks.