Extend Centralized Procurement

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Understood that fusion support centralized procurement model, like LE B can process the requisition for LE A in order to get a better price from supplier. However, can we extend to a model that LE B will charge service charge to LE A. For example, LE B is a procurement agency for LE A. Each time LE B purchase for LE A, LE B will charge a fixed amount/percentage based service charge to LE A. Is it possible to setup this in Purchasing?