From the History Appointments window, you can view past appointment records that have been saved for each patient, enabling you to access a complete record of each patient visit. This feature is enabled by default. If you do not want to save patient appointment histories, you can disable this feature.
You can also view slot notes and blocked slots in the History Appointments window if your office does not use the Remove Slot Notes from Scheduler and the Remove Blocked Slots from Scheduler options. See Setting Scheduler Defaults for more information.
Understanding History Appointments Window Options
Changing the History Daybook Date Range