Freight Charges @ delivered quantity instead of sales order quantity

Dear Friends
I want to apply and calculate freight charges @ delivered quantity instead of sales order quantity.
For Example;
Sales Order was of 10 MT whereas Quantity delivered was of 12 MT or 8 MT. I want to calculate Freight on 12 or 8 MT, as the case may be.
I am using R12. Please help me with mentioning targeted options.

Thanks and Regards

Oracle Applications Fusion Cloud - Inventory

Oracle Cloud/Fusion Procurement training will help you develop the fundamental skills required to set up and use the Procurement module. This training covers all the tasks, setups, forms and reports used in Procurement and related modules