Blueprint internal mesh instancing

HI, I have a window bluperint with a plane inside. I use this blueprint in houses blueprints a lot of times. Then I place houses on my map. And planes from window blueprint does not become instanced. Is it possible to make these planes instanced in UE4.22?

Had to read your question many time till I understood it. If I understood correctly you have ChildActor components in the house and want to use static instance of the same house, there are few ways to do this or make a blueprint of the house go thorough all of its children look for static mesh instances then add one to himself and add the instance on the same location and there another one is to to do it in the window itself.