SOLVED: Shared Network Folder Option not appearing (10.9.0)

[crenox]

Hi there,

i recently set up a Jellyfin Instance for my new NAS.
Jellyfin is running in Docker Compose, Share is directly mounted under /media.
Watching Movies etc. does work in Browser. But i want to get it working in Kodi with direct play.
In the Jellyfin Documentation the "Shared Network Folder" is supposed to show up under Libraries -> select a Library -> select Folder.
But as shown in the Screenshot i cannot see that Option.
Ist there any configuration i have to do first? I could also not find any information on how to add PathSubstitutions manually in the configs.

Thanks for the help

crenox

Screenshot: https://imgur.com/OQUPFzh