UGC/Rigs custom cages?

Hi, I’m wondering if there’s any tutorials on creating custom cages meshes for custom rigs?
So far Ivd only found tutorials that rely on using ROBLOXs provided one and don’t go into detail on how to create the cage.

Thank you

I usually use the “cope” method by copying mesh objects, assigning them the same names as the format says, and Roblox auto-generates them in avatar setup.
At least this is what I did for my in-game rig.
I don’t make UGC, so I don’t know how it will react to this.