Blueprint of Multiple Object grouped inside a grouping_Blueprint?

so i tried doing the blueprint of blueprints. but it considers each of the dependent blueprints the same object , instead of each object within retaining its own unique identity. (hence a destroy actor, destroys all of the same actors)

is there another way to set a standard spacing for objects (looking to create 'stamps, and multiple stamps) so i can throw the 3d objects into a scene quickly at a specific spacing…