There are only certian fields that you can select to show up in the apt book. I wish that gendwr was one of them. Often times when making comformation phone calls it is hard to tell the gender of a child by their name and is always embarrassing when you refer to them by the wrong gender.
Thank you for the recommendation, we are always looking for ways to improve the product. we will consider this for a potential future release.
The hover detail window should have the Age\Gender as the third field, when you hover over the patient appointment.