V3.1 and later
The Notifications menu on the left panel menu displays the Case reminders set by you for the cases. The reminder notifications are read only so, you can open, read and close them.
Click Notifications on the left panel menu. The Notifications page displays the list of reminder notifications.
Click the ellipses (…) next to Open on a notification, to mark the notification as read or move the notification to Closed. You can close multiple notifications together by selecting the check boxes from the grid and clicking Move to Closed.