Since there are a limited number of lines visible at a time in the appointment book, an Appointment Display Info option for combined Age and Sex\Gender (E.g., "Age: 24,F") would be convenient, because not all patients can have their Sex\Gender immediately apparent from their first name alone, and there is ample space on the line for the combined info.
(Note: We have the Hover Detail turned off because it was too easy to leave the cursor over an appointment and have a patient's full information visible on the screen.)