make one calendar for appointments, classes and events for the Admin

Having all classes, privates and events all viewable from one calendar on the admin side would be useful for all admin. Currently I have to go to appointments and private lessons to see the calendar with all appointments and private lessons and a separate calendar in reports to see my events. I am suggesting a master calendar for everything so that I do not have to jump around to see what's happening for the studio. The ability to filter out privates, classes and events for viewing purposes would make this highly functional for all.