Currently it’s more of a Creative native feature so you simply place the manipulator device in the same location as the prop and it uses the overlap event to bind at runtime.
You can physically attach the prop manipulator to the prop as well in the outliner:
There are some requirements having to do with visability/meshes that I don’t fully understand, so if you can’t get it to attach this way ensure its visable, has a static mesh components set to movable. (At least I think 
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