Set 4 points in world transform and spawn a static mesh perfectly fit into that?

How to spawn static mesh in a 4 point space?

Are the points all in the same plane? What shape?

Hi! Thanks for reply.
They aren’t in the same plane. It would be an object to spawn in Virtual Reality. I put a pillow on desk in real reality, and to set it on VR scene I pinch with my hand on four corners and maybe the top of it.

No idea, sorry… :-/