Stacking Series' of Books in iBooks

Hello Everyone!! Can you help me?

If you have a series of books this will help you understand me! e.g. Naruto (manga)

In the iOS app, iBooks, you can choose to view books by collections "all books" ""books" "pdfs" "audiobooks" "and any other collections you have made".

In the collection "all books" if you have a series of books like Naruto, they automatically stack, instead of having 72 volumes side by side...However, they don't stack when you move them to a custom collection.

So I guess my question is: Is there anyway to stack books in custom made collections on the iOS app iBooks?

Thanks for all your help. And if it isn't possible, please consider this apple, we like organised things to be organised.