[eLDeus]

If I assign a specific tag on an ebook in Calibre and send it to my PocketBook 740 it will appear under the corresponding genre section. But if I tag a PDF book the same way it just won't appear under the same section. How can it be achieved?

Does it need a PDF editor to assign a tag so it would appear on the reader in the same section among ebooks with no need to switch to a file type filter every time which is obviously inconvenient?

Thanks