How to create a list of patients to contact so they can receive a notification telling them to schedule their next appointment?

From the PetalBooking interface:

1. Recall lists section
2. Click on the Create a recall list button
3. Name the list
4. Select the Service
5. Choose the Healthcare Professional(s) from the drop-down menu (optional).
6. Indicate the Time since the last appointment.
7. Choose the number of days before the due date for sending the patient reminder.
8. Automate selection with criteria to apply other criteria to segment patients such as age and gender.
9. Save.