Navigate to > Setting > Account Setup >Scheduling:
There is a check box added "Display Injury Area in Scheduler:"
If the check box is checked and the patient appointment is scheduled then the injury area will get displayed in the calendar and pop up:
If the check box is unchecked then the injury area will not get displayed in the calendar and pop up:
Note: The injury area will be visible only if the selected patient has data in the Injury Area field under the Patient Information section: