Freight Charges Distribution

Dear All,

I have a scenario for Freight Charges in Purchase Order.

The Purchase order has two freight vendors, both will be transporting the material on qty basis.

How to handle this situation?. If i maintain the freight condition two times, both the values are getting loaded.

Gross Price: 100$

Qty: 100 MT

Freight: 0.5$/MT ( 1st Vendor)

Freight: 0.5$/MT (2nd Vendor)

Kindly advice me on this regard

Thanks & regard

Panneer