changing a background - not a swatch...

Hey everyone! I'm new to creating cc - meaning I haven't done anything yet but I have been playing with the programs and I've recently starting using DAZStudio to create art so I'm a bit more comfortable with 3D now.

I had an idea for cc that I required in my game but I'm not finding how to do it using S4S. Here is goes:

- I would like to add more background versions to the moschino stuff pack Photo Drape. I opened in S4S and I can change the swatches but not the backgrounds we choose when taking pictures.

- Is this a script/mod thing and not really cc?

- Am I missing a button...?

Thanks for any help you can give!