Give your Instructors 24/7 access to their flight instruction appointments so they know their schedule! Instructors receive email notification of new appointments! You decide if instructors are allowed to setup their own "time-off" as well as who is allowed to make, edit or cancel reservations with those instructors.
If given permission, instructors have access to setup their availability through their Instructor Center. However if you'd prefer, you can exclusively setup each instructors availability for them. You decide.