how do i prevent same actor to overlap

Development Programming & Scripting Blueprint
1

first of all this is for a paper 2D game.
im trying to spawn multiple numbers of the same actor on a random part of my map but it seems that the mobs that i created overlaps each other turning them into one.
i have already tried setting the collision presets to block all but they still overlap each other.
how do i set the collision of the same actor to prevent them from overlapping each other?
the screenshot below is how i spawn the actors on the map.

2

Did you try to set the collision handling override to adjust position?

3

i actually did that just now. i set the collision handling override to adjust location but always spawn but they still keep on overlapping.
and by the way the actors are actually moving towards my pawn and when they reach a certain distance they will stop running and will start shooting.