[Sukeroku]

I have seen the standard answer to this is to link a certain guide, however it does not seem to actually answer the question I am asking - or if it is, I am not understanding it.

I was trying to assign multiple books to the "collections" categories, something like with Calibre itself when you bulk edit metadata to add a tag to a bunch of books.

But for the Kobo A1.

To my understanding, it is also possible for Calibre to do it automatically, but I am using a more complex categorization syztem on Calibre; I want to employ a simpler system on the Kobo.

EDIT: I have also just realized that filling in the "collection" space in Calibre does not actually work, as it does not stick on the Kobo.