Outfit Studio: Missing Textures, Mesh won't update & CBBE

[VirtualVictory]

I recently started using Outfit Studio after I learned you could replace any outfit in game with whatever mesh and texture you desire, I wish I could've known sooner. Anyways, I have easy questions so I am hoping someone could answer,

 

1. How do I load multiple meshes together?

 

I see some CBBE outfits using multiple meshes for the body itself, a belt and other accessories, why is this? Can't they just use one mesh?

 

2. How do I add meshes and textures to my outfits in Outfit Studio?

 

I want to combine some of these meshes, how could I do that?

 

3. Why is it that whenever I preview an outfit, it's textureless?

Edited February 5, 2016 by VirtualVictory