0. Verify in Global configuration Public usergroup has "Create" set to "Not Set"
1. Verify in Global configuration Usergroup A is under "Registered" usergroup and that "Registered" has "Create" set to "Inherit" aka "SOFT deny"
2. Verify in Global configuration the "Usergroup A" (=your authors) has set "Create" to "Inherit" aka "SOFT deny"
3. Verify that in FLEXIcontent component permissions "Usergroup A" has "create" set to "Inherit" aka "SOFT deny"
4. Verify that category 1 permissions have "create" set to "Inherit" aka "SOFT deny"
5. Verify that category 2 permissions have "create" set to "Inherit" aka "SOFT deny"
6. Verify that category 3 permissions have "create" set to "Allowed" (which is possible because parent does not have HARD deny (explicit Deny))