Notifications features:
1. Sending a notification about creating an appointment, even if by default this notification is not sent (read more here).
2. Setting up an individual reminder of the upcoming appointment via SMS and e-mail.
3. Set up an individual return appointment reminder.
By default, the data from Settings - Notifications will be used.
History of changes features:
View all changes to appointment in detail: who, when, and what data changed.
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