prefabs of clothes

[josemendez]

In the 

Samples > Cloth > CharacterCloth 

you only use one piece of clothes, the "Trenchcoat", what about prefabs of say shirts, trousers, skirt that can be turned off and on.

What is the setup for the above?

What do you mean? You're supposed to provide your own meshes (shirts, trousers, or any other mesh you may want to apply cloth physics to) and make blueprints out of them. Obi is a physics engine, it does not include any art resources.

If what you're asking is how to add multiple cloth actors to a single solver, it is done in exactly the same way as you do for just one: make a blueprint out of the mesh, add another ObiSkinnedCloth/Renderer components, and done.