Hey Nikolaus,
Thanks for reaching out to us!
It looks like this layout is a customized version of our list view. If you check your theme, you’ll most likely see a “tribe-events” folder which contains customized templates.
What you could do is take a look at this folder and find the appropriate list view file that is controlling this layout. You can then compare to the original list view files in the plugin folder within the “views” folder. You should be able to bring over the section which controls the organizer output.
Let me know if this helps.
Thanks!