For a quick glance here is a video - Bell Icon Notification Enhancement
We have added a special notification for unconfirmed appts. To enable this notification you will have to enable the NFUA flag under the Site Configuration page.
Now when the status of the session is changed to Unconfirmed, after logging out and logging back in into the system you would be able to see the Unconfirmed Appt Alert Notification.
To make the Unconfirmed session Confirmed, you can make this change from the notification by clicking on the "Accept" icon.
The notification will not disappear when you don't accept or read it in case you want to come back and accept it.