In the Appointments module, click on the Appointment Lists toolbar button, and choose Confirmations.

The list above would normally be much longer. It will contain all scheduled appointments between the dates listed at the top of the screen. The dates default to the next two business days, but you can change them manually and then click Refresh. When you click on a row, the text might turn red. This indicates that there are other family members on the list. Each family member will be in red. That way, you only need to make one phone call to handle all family members at once.
If you are doing your confirmations by phone, then you would double click on an appointment in the list above to open the Appointment Edit window. From within that window, you would change the confirmed status of the appointment. Notice that if you change the appointment note that it will show on the list when you return.
If you prefer to send postcards instead, then you can use the print postcards feature. If you want to change the message, you can either do it for this one printing, or you can change the default message in the Recall Setup window. ?date and ?time will be replaced by the actual date and time of the appointment.
At the upper right, you also have the option to print labels and to export the data in the list to a text file for use in other programs.