I want to use skin for different classes (swordsman, archer, etc) with their own cloths and equipment while at the same time I also want to use skin to apply different hair styles to characters. In the editor, I can only select one skin at a time. There is no shift select to active multiple skins at the same time. So I want to know if I am doing something wrong? or is it not possible at the current version. If not possible in editor, can it be done by code like in Unity?

Btw, I think when selected an attachment, it should have the same button [Add to skin] to have things simpler. It will then automatically add the Placeholder and assign to current skin for me.