Sådan gør du
User.Read permissions are used for user and peer information; the exact data depends on the permission level.
Presence.Read.All relates to presence status. Calendars.ReadWrite can be used for calendar operations.
Group access can support privilege groups and administrator access.
Review both delegated permissions and any application permissions with IT. Removing a permission can stop the function using it.
Use the current app registration and Security Center as a basis, rather than assuming that a historical list applies to all installations.