[qee4q]

I have a kobo aura.

I have created collections/bookshelves in calibre based on the series column. Now I would like to add some custom bookshelves where I manually on the pc decide where every book goes. I have quite a lot of sci-fi series and I would like all of theese books to show up on a new sci-fi shelf. Also I have some books on politics which aren't part of a series which I want to group together on a shelf.

I haven't checked if the genre-metadata says sci-fi or something else since I want to do this manually. How do I create the extra bookshelf? The guides I've found all describe how to make collections base on series but not how to make further collections using calibre.