Hi @Ezekiel4000
AFAIK you can only have one mesh attached to a given socket at a given time.
If you want the meshes to all be visible at the same time, you could try to clone your existing socket on the mesh itself, once for each mesh you want to attach.
So the sockets will have different names but always the same transform.
Then attach the different meshes to those differently named sockets, and the meshes should all appear superimposed.
Good Luck 