When selecting a time slot for an appointment, the "Patient:" field will display the name of the last patient whose demographics was viewed via the calendar.
For example, click on a patient on the calendar to view their demographics. Then exit and go back to the calendar to click on an open time slot to schedule an appointment. You will see the patient name of the demographics you just viewed. This does not happen on the Original Style Calendar. The Original Calendar style will always display "Click to select" in the "Patient:" field even after viewing previous patient's demographics.