Access Review
The access review policy asks owners to review members and owners of their resources after a given number of days.
In the Reminders section set the number of reminders and the interval at which they will be sent if owners don't act on the notification.
In the Actions section you can enter an email address or webhook url that will be notified if owners don't act on the notification.
If no action is taken by the owners, a resource can be configured to either be deleted, have all permissions (except those of the owners) removed, or remain unchanged.