How to get multiple meshes in Skinning Editor

I want my character to have separate meshes like in the example below, I have tried using a sprite sheet where each piece is a separate sprite but that is not supported in the Skinning Editor. I have tried manually making the geometry but that does not work either.How would I go about this?

vs mine

I found the answer, the problem is Unity’s mesh algorithm does not work on small sprites, in this case my sprite was 16X32, I made the sprite 32X64 and spread the parts out much more and the algorithm worked.