How to weld clothing morphs to a rig

Hello, I need help.

So, in practice, I mostly do clothing morphs that I have to weld onto a playable dummy, which you can see in the picture. The problem is how. I have a plugin but its buggy and uses WeldConstraint, I wanted to use Moon Animator 2’s easy weld but it doesnt work great and costs 1700 robux, so anyone got any idea how to do this?

I want the clothing to be welded to the rig, so when I put the StarterCharacter in StarterPlayer I can move around with that specific morph. All help accepted and appreciated, thanks in advance.