Material Overhead setup as a % value for Raw materials

Summary:

We have a Business Requirement to calculate Material Overhead for Raw materials as a fixed % with respect to the Source it is getting purchased from.

For Example - All RMs getting purchased from Source X will have 2% of Material Overhead (representing Freight Charges) applied on the Material cost.

Could you please help with the required approach to configure the above Material Overhead for Raw Materials.

As checked, currently in Manage Standard Cost UI, the option available is only a fixed value to be added as cost element type - Overhead.

Also, as checked we have % Overhead application option available in Manage Overhead UI but this will be applicable only for rolled up cost for Finished Goods.