A Microsoft file hosting and synchronization service.
Hello PeetLückhoff,
Thank you for the update.
I reproduce the issue here and I can see Manage access. See the attached screenshot.
Do you have admin access, you need admin rights to manage the advanced options.
If you don't have the option, you will need to reach out to the admin for assistance.
Looking forward to your response.
Best regards, Oluwatosin.