Move a specific actor

When clicking on one actor, I want to move another specific actor that may or may not be the last created actor and has definitely not been collided with. Is there some reason we're not allowed to select which actor to act on but may only act on the Last Created, Last Collided, or Self? Like can someone explain why Choose Actor is not an option?

How do I move a specifically chosen actor that's not last created nor last collided with?

Thanks for any help!

Create an actor attribute, non-hidden. Configure that attribute in your behavior through instance customization.

Choosing an actor is only an option if you can chose the actor. That's either in a scene event or through a non-hidden actor attribute in an actor or scene behavior through instance customization.