For proper operation of the database, the gender of all children, siblings, and the subject person must be set. To do this click to the right of a person's name in the gender column (which is located just to the left of the arrow buttons) for siblings and children, and in the gender box (which is located just to the right of the subject person's name at the top of the card) for the person him/herself, to identify or change the designation of the person's gender. One click will change the designation from blank to "M", for male. A second click will change the designation from "M" to "F", for female, and a third click will change the designation from "F" back to blank. Thus, successive clicks will change the designation in the following order: