Step 1: Make sure you have the proper coin type (Penny, Nickel, Dime, etc.) selected.
Step 2: Enter the 4-digit date of the coin.
Step 3: Follow the prompts.
A list of your finds will appear as you enter them. This will be stored in local memory until you clear it, so the next time you visit the Roll Search program, it will still be there. Also note, this app is designed to display on a smart phone.
If you have a Numismetrica account, more options are available for saved collections.