Appointment reminders display a Reminder dialog box at a specified time before the appointment occurs. In the Reminder dialog box, you have the option of dismissing one or more appointments (if multiple appointments are due), opening the item, or resetting the reminder to appear again in a set amount of time.

Reminders can be set when creating an appointment by checking the Reminder check box, setting the amount of time before the appointment that you would like the reminder to appear, and optionally choosing a sound file to play when the reminder alert appears.