Your comments
It seems to me that I have thoroughly checked your instructions but it does not work.
I'm sending screenshots. The first one is from "Finder". The others are step by step in Ubooquity.
Finder:
Ubooquity:
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Customer support service by UserEcho
Yes, it concerns the embedded folders, as shown in the first image, ie. in Finder in MacOSX.
Why am I talking about it?
Before I started making the catalog of books, I asked myself a question as a reader who came to the library or bookstore: What would I like to read? Writer or some genre? And even a specific genre in professional literature (hobby -> cars). Mostly (90%) is a genre and then a writer.
That's the first thing.
The writers are incredible, and each of them has not only written detectives like "Agatha Christie". The vast majority of writers wrote different genres. E.g. "Jo Nesbo" writes both detectives and children's literature.
Note: The writer is trained in Ubooquity perfectly. Finds all the books of all the genres he wrote. Super! :-)
The second thing is that some books are released in the series as "Stephen King," which wrote horror in particular. He has books in series such as "Enlightenment", "Derry", "Four after midnight", ... And each series has several books. And, of course, he wrote horrors that do not belong to any series, because it's just one book on its own.
The series is given by having one main hero in particular. In each series there is usually another main hero. The series can also relate to the theme. It just depends on the writer.
The third thing. Horrors can be general, but they can be further broken down into detective, historical, sci-fi and fantasy and thrillers.
I sort books by the internet book catalog, which assigns to each book the categories of genres to which the book belongs.
However, if you say that Ubooquity does not know more nested folders (and probably will not), as shown in the first picture, nothing can be done. Either I'm going to think of another sorting mechanism or I'm going to let it go.
Thank you for your idea and work