sorry if I misunderstood, but why set them to movable if you don’t want them to move?
if I understand what you are trying to do, they won’t move after you move them unless you have physics or something cut on, is that what you need? turn physics off?
because once you move it, it should really stay where you put it.
note you can drag the component (Mesh) into the event graph then drag off of it to access what you can actually do with it in a BP
Edit: if you are simply trying to set them to stationary just click stationary in your first screenshot and they won’t ever move unless simulate physics is checked (in same details panel)
it will take care of itself from there.