On the Insert tab, in the More Topic Elements group, click the Alert arrow, and then click Manage Topic Alerts.
You'll see a list of all the current topic alerts with their status in the "Due in" column:
When a topic alerts is shown as overdue its reminder period has already passed but it was never opened or dismissed. To clear these alerts you can use the Delete command (described below), or you can modify them to re-set their due date and time.
Other Topic Alerts show when they are due. (You have the option to see only today's Topic Alerts.)
Bold text means the Topic Alert is active (within its reminder period).
Once you select a Topic Alert in the list you can click:
Modify the Topic Alert to change the reminder info.
Open Map to view the map that is the source of the Topic Alert.
Delete to remove the alert from your
system.
Note that this is the only way to delete a reminder. Deleting the topic
or map that is the source of the reminder does not remove the alert from
the notification system.
To modify or remove a Topic Alert on
the current map, right-click the Alert icon , and then click Modify or Delete.