Her$/$his Responsibilities include evaluating vendors, requesting proposals, conducting negotiations, drawing up the contract and placing the order. She$/$he is usually purchasing officer.

She$/$he does not select the product or vendor but might provide specifications or evaluate criteria. She$/$he might be a product developer, a quality control engineer, a manufacturing employee, or an external expert.

She$/$he first recognizes the need, opportunity or problem that could be solved with a purchase.

She$/$he controls or filters the flow of information regarding products and vendors to members of the buying center.

She$/$he frequently involves in specifying minimum performance requirements that the product must meet.