To create a Discount code, go to your online store admin and choose Settings -> Discount Manager.
Select Create A New Discount Code
Key in the name of the discount that is meaningful (e.g Grand Opening, etc.).
This is the code your customers need to key in to your store to apply for the discount.
Check to activate the discount.
Select the currency used for the discount
Select the trigger for the discount to be applied, such as when customer orders amount or spend a minimum amount.
Discount Given and Items Included
Enter a flat rate discount or a percentage discount. Set the discount to be applied to specific cart items, category or the entire cart.
Set when the discount expires or the number of uses.