Mentoring Moment: Buying Centers Depending on the complexity of the purchase, firms may use a buying center to complete a transaction. Buying centers vary in size and composition but generally cover six roles: initiator, user, gatekeeper, influencer, decider, and buyer. Drag the description of the responsibility to the role to which it belongs. When you have moved all the descriptions, click Submit. Initiator Customers who come into Caffè Gustoso's Naperville location will benefit from the relaxing ambience the fish tanks will create. User One of the owner's spouses recently visited an upscale coffee shop in San Francisco whose internal walls were created out of fish tanks. She wants to replicate the relaxing feeling in the Naperville location. Gatekeeper Before the fish tank specifications were finalized, the owners talked to a tropical fish retailer to gain some information and inspiration about what fish to acquire for the tanks. Influencer Caffè Gustoso's secretary collects, sorts, and organizes all of the fish tank catalogs and bids submitted in response to the request for fish tank proposals Decider With the winning proposal identified, Caffè Gustoso's purchasing agent completes the transaction by placing the order and negotiating delivery and installation. Buyer The co-owners of Caffè Gustoso review the proposals submitted by the tropical fish companies and choose a finalist.