I believe, based on your question you want a functionality that is not implemented in this mod.
I refer to it (for lack of a better term) as Multiple attribute combinations.
Unfortunately, this mode does not yet support that type of combination.
There are thoughts on how to accomplish this when time permits........

The mod supports individual attributes for a product, you can have a Size selection, a Color selection, and or a Material selection.
but not a selection like Size, Color, Material. The difference being how the background code handles the combinations. The instructions strive to show what will work.