Bulk discounts can be applied to all products at once
Menu Path: CRM > Masters > Quantity Discounts > New
Enter the Code, Description and select Sales UOM
Set the Minimum Quantity and Discount percent
Menu Path: CRM > Masters > Pricing > Pricing Rule
Select the product Criteria, Pricing Method, and Select the Quantity Discount created.
Menu Path: Sales > Transactions > Sales Orders > Menu > New
When the Products are added to the Transaction, the discount is applied if the sum of quantities of Products falls in the range set in the Quantity Discount Master