In order to enable Price Class Discounts in your store, navigate to Discounts Setup screen from the Store Admin Menu and select the option titled “Enable Price Class Discounts” as depicted in the following screen shot:
For more information on the Discount Setup screen, please see the Discount Setup section.
Next, the Price Class Setup screen needs to be configured. To configure the Price Class Discounts screen, please see the Price Class Discount Setup section for more information.