Which function is NOT performed by a workstation (POS)?

The function that is not performed by a workstation (Point of Sale system) is controlling the store's price book. While the workstation is responsible for processing transactions and facilitating sales, controlling the price book typically involves managing pricing information and inventory at a more centralized level, often handled by back-end systems or management software. This function ensures that all pricing is consistent across all devices and might involve updates that affect all workstations, but it does not usually fall within the immediate functionality of a POS system during customer transactions.

On the other hand, enabling fuel dispensing, selling car washes, and selling in-store merchandise are all direct transactional functions that a workstation is designed to perform. These activities involve the workstation's ability to interact with customers efficiently, process payments, and manage the sales of specific products or services directly at the point of sale.