In Sharepoint Online, I want to restrict access to a subsite.
I have removed inheritance for the subsite and added a special group as contributors.
Now I need to remove the normal contributor group, but the button to do that "Remove User Permissions" is disabled:
I am Global Sharepoint admin. I am also member of the Owners group on the root site. Also, I have given Global Sharepoint admins Full control over the subsite:
Even on the root site, the story is the same. The Modify buttons are disabled.
Why can't I use the Modify buttons?