Occasionally, you may schedule an extremely long appointment. If you cannot see the beginning and end of the appointment at the same time in Appointment Book, Dentrix Enterprise will not allow you to double-click the appointment to make changes to the appointment information, but you can access the appointment from the Appointment List. When you locate the long appointment on the Appointment List, double-click it to open Appointment Information dialog box, and then edit, move, or change the length of the appointment as needed.