Hello Chris,

One thing that you could is try handling the following events of the UltraMonthViewSingle control:

ultraMonthViewSingle1.AppointmentResizing

and

ultraMonthViewSingle1.AppointmentsDragging

like:

  void ultraMonthViewSingle1_AppointmentsDragging(object sender, AppointmentsDraggingEventArgs e)
        {
            e.Cancel = true;
        }

        void ultraMonthViewSingle1_AppointmentResizing(object sender, AppointmentResizingEventArgs e)
        {
            e.Cancel = true;
        }

Please let me know if you have any other questions.