I use outlook to schedule appointments with my customers with specific employees. I have a scheduling department that does this scheduling via a master outlook calendar. All appointments originated from this calendar and then the appropriate employee is added to the calendar appointment. So the appointment shows on the master calendar and the invited employee(s).

The employees have no option to reject or modify these appointments; therefore, I would like to force this on their calendar with them having to accept it and not allowing them to modify it. Additionally, I need to know real time once they are scheduled. Right now I don't know they are scheduled until they accept and that sometimes takes too long and then they are inadvertently double booked by the scheduling department.

So how do I force appointments on calendars which are not editable?

Thanks for your help.