Combining meshes in NifSkope for bodyslide

[conglaciatus1]

I've been trying to figure out how to add belts to some armor replacers so that weapons don't just magically glue to people's hips. However, I cannot find a current/clear tutorial on how to add the belt to the preexisting armor so that it still functions fully in bodyslide - could someone point in the right direction, or give me some steps to follow for this?

 

Thanks in advance!