Possibility to reflect an expense in more than one Budget Book

I’m just starting to use the app and I’m finding it really useful until now. I have already registered my accounts, and added a different Budget Book for my home, to register the shared expenses.

The only thing I’m missing, because the use I’m giving to it, is a switch (or a toggle) in which I could register an expense in both, personal and family Books, at the same time.