Coupon Codes lets you create special codes that provide product discounts as a way of encouraging more sales.

Under Couponds Codes in the Shopping Cart: 

1. Enter the code that you want (this is what your customers will need to enter).
2. Choose the type of discount to apply (dollar amount or percentage) followed by the amount.
3. Add the expiration date for when the code cannot be used anymore.
4. Select whether to have the coupon apply to only certain cart products or all products when the customer checks out.
5. Provide the code to your customers (via newsletters or social media, for example). They will enter this code into the box provided on the purchase summary page during check out.