How to manage two Kobos with different collection structure in one Calibre library

[AnotherAnders]

I maintain two Kobo's with very different organisation of collections. I manage all books with their collections on my Windows 11 laptop with Calibre (Portable 8.5), and I have two libraries, one for each Kobo. I sideload all books. Many books occur in both libraries. I could create a library with two collection columns, but then I would have to switch the collection column in the KoboTouch plugin all the time. That is something I would often forget to do with my aged brain, creating chaos, as I've noticed that Calibre updates the collection of ALL books on the Kobo and not just of the ones I add or update. Is there a better solution?

[Lys]

Collection template in the driver configuration should solve your issue.
You can use your Kobos' Serial Number to identify which collections you want to sync with which Kobo.

Something like this:

program:

if serial_number == 'put here the first Serial Number' then

add here your collections 

fi;

if serial_number == 'put here the other Serial Number' then

add here your other collections

fi;

I got the idea about Template Collection + SN from a post by Chaley, so there should be some examples around on the forum.

[AnotherAnders]

Thank you, Lys. I have found the post by Chaley. I have a feeling that this the way to go. But first I must learn to understand the necessary parts of the Calibre template and/or the Python language, and set up a test environment where I can safely experiment. I have programming experience, but not in these languages.