The quantity discount allows you to offer a discount on specific products when users add to cart one or more items that you have previously selected.
Each discount must correspond to a new Quantity discount type rule.
Only one quantity discount per product can be applied at the same time
To create a new rule, go to YITH Plugins > Dynamic Pricing and Discounts > Price Rules, enter the name of the new rule and click on the Add new rule button.
Enter a title for your rule and select “Quantity Discount” mode.
Now you can select the products you want to associate with the rule and proceed with the configuration of all the parameters.