Setup > Preference & Costs > Preference > Price Break Type Default
Price Breaks
Price breaks allows you to create pricing for different quantities for the same line item.
Different margins or discounts can be given to different quantities.
Set the default option for price breaks.
Options : Quantity Matrix or Line Items
Quantity Matrix
When you apply the Quantity Matrix Price Break option to a line item, a quantity matrix is applied to that item with different margins or discounts.
Line Items
When you apply the Line Item Price Break option a line item, a copy of that line items is made for each quantity.