[Phyxius]

first off, thank you both.

@dwanthny
The settings you gave me offcourse worked as it should. It sorted the series from the calibre library as collection on my e-reader.
In practice it would be better (in my case) if the authors from the calibre library would be created as collection on my e-reader. So I changed the input that “dwanthny” suggested until I found the setting I needed.
In the end I found two think; 1# the corrected settings to create what I needed and 2# Why I could not solve it before. Namely I was to fixated on the differences between library thereby I could not see the one letter missing. Although it worked on the previous (old) laptop the corrected input is “Authors” instead “Author”. In the attachment you will find all settings that I used.

Again Thanks and if you any suggestions I would be very interested.