Are you looking to put a collision checker at the spawn location of each enemy to check if the enemy is 'at home'? You can easily do that using Containers and some instance variables. Like On Create Collisoin_Checker, set Collision_Checker.Enemy_UID to Enemy.UID. Then you need to decide whether to use On Collision or Is Overlapping; search the forum for discussions about efficiency and workload associated with each of those options - it depends on what you're really after as to which will be best to use. If On Collision is too demanding (lots of enemies) then you could do a distance check or, alternatively, manage their movement using a FSM so you just know when they are in collision with their start point Collision_Checker. As said above, it's hard to effectively guess what sort of help you need.