Filesharing-Problem

Hello Ubuntu-Community

I got a very annoying problem with the file sharing system in ubuntu.
When I try to set a file available in my network, I want to set a specific group, which is allowed to access the file.
But when I try it, I just got a few groups available for this action and not my new added group “fileshare”

I don’t know if I’m silly, but I’m really new to Ubuntu.

Well, okay, the image is in German, but I hope you understand my problem.

I would very appreciate it, if you could help me with my problem.

(greetings)

I’ve moved this to the https://community.ubuntu.com/c/support-help-requests category because this site isn’t designed to take tech support questions. Sorry. I’d recommend using one of the official support channels listed on the https://community.ubuntu.com/t/finding-help/712 page.