What kind of design to use for nested options?

I have this kind of structure.

At the top I have 2 options, Depending on which, I have 2 or 3 options, Below them I have single layout.

This options are changeable. I want user to select from options and see actual layout. I want those options be changeable too.

I think I need something like nested tabs. What's the proper way to present this stuff on android?