Reminders can help when you have a lot of flagged items and you might miss one that's important. A reminder pops up and demands attention—just like the alerts you see for a meeting or appointment that’s about to start.
In Tasks, right-click a task, and then click Add Reminder.
If the task is already open in its own window, click Task > Follow Up > Add Reminder.
In the Custom dialog box, it’s a good idea to change the default Flag to text to a clear action so that when the reminder pop-up appears, the required action is obvious. For example, you could type Send Anne an answer to the permit question.
The Reminder box is already checked, so enter the date and time when you want the reminder pop up to appear.