Practicing bookshelves

Hello,

I was wondering if it could be at all possible to have an option to practice vocabulary from whole bookshelves, just like you can chose to practice from a particular text.

I know we can practice all of the vocab, where it takes words from various texts of ours. The thing is, I like to seperate my European and LatAm Spanish texts, but when I just click practice all, it mixes the dialects together.

Thanks for considering!