On the Appointment Schedule (Override) you can Override the given days Max Appointments/HRs but if you wish to Override further days you need to go to the Appt Schedule, choose Calendar, select another date then Override the Max Appointments/Hrs.
Can you (1) Add the Calendar option on the Override screen so it's much quicker to override multiple dates (2) When selecting the date, populate the existing Max Appointments/Hrs but if altered save the overridden Max Appointments/Hrs and write it to a History section on the Override Screen (3) Allow the user to visually see the Overriden dates and give the ability to edit/delete.