Which of the following is not a focus of the front end supervisor's function?

The role of a front end supervisor at Costco primarily revolves around overseeing operations that ensure smooth transactions, safe environments, and efficient customer experiences. Among the functions outlined, managing store promotions is outside the typical purview of a front end supervisor.

The focus of controlling inventory is essential as it directly impacts the availability of products at the checkout, ensuring that customers have what they need without delays. Ensuring an injury-free environment is also critical, as it prioritizes the safety of both members and employees in potentially high-traffic areas. Facilitating member flow is crucial because it affects the overall customer experience and operational efficiency at the front end.

In contrast, managing store promotions typically falls under the responsibilities of a marketing or merchandising team, rather than being a day-to-day function of a front end supervisor. This delineation helps maintain the focus on immediate customer interactions and store safety, allowing managers to dedicate their efforts to areas that directly influence the checkout experience and operational standards.