The first thing you do when you start a rental, or sale, is to select a customer. You can type, or scan the number of the customer and the information for that customer is brought into the program for you. On this screen you can select F3 to lookup or add customers, F2 to find customers by phone number, F10 to find customers by the movie they have rented. You can search for a certain film to see if it's in by pressing F7, find movies by a Star by pressing F8. To return a group of movies click on, or press CTRL-B.