SAP Business One Helpdesk

Open Period and Volume Discount window.   

Select the price list, desired item or all group of items with the 'Add Items' button.

Double-click on the item, enter the desired date range and discount.

Double-click on the Period Discount line, enter desired volume quantity, if required.

Click 'OK' and 'Add' button to save the settings, exit Period and Volume Discounts Window.