Merge skeletal meshes for lighting and shadows

Hi I have a multiple skeletal mesh components in an actor.
I want them to be handled as one mesh for lighting and shadow calculations. I don’t care so much if the draw calls are merged. I know there is skeletal mesh merging in c++. In my case they don’t have the same skeleton and sometimes there are even static meshes.
Is there a way they can using the same volume lighting samples and shadows?

Regards
WAII

Nevermind,
I solved it myself. “Use Attach Parent Bounds” in the child meshes did the trick.