When you open the Contacts app, your contacts list is displayed. You can drag along the vertical alphabet on the right side of the screen to quickly scroll to the letter section you want (a blue letter displays your location as you scroll).
In case of Emergency contacts is displayed above your list of contacts. Add up to 5 emergency entries from your Contacts list. These are entries that someone can contact on your behalf in the event of an emergency, whether or not the phone is locked.