I think I know where this is going, and I've been there.
You want each enemy to have a health bar, but you've placed them in the IDE so containers aren't really useful since you can't associate any healthbar instance to any enemies, also placing healthbars in the IDE is kind of overkill.
When I had that issue, I used the enemies as "markers". I had one healthbar instance, with "Destroy on startup" attribute. I had placed enemies at their locations, then, On Layout Start, I would for each enemy sprite destroy it and then create a new one at the same location. Since I had healthbars in a container with the enemy sprites, they would both spawn and become associated.
Tangly paragraph that last one. Let me know if its unreadable.