Final answer:
Potbelly, under Alan Johnson's leadership, engages in planning, organizing, leading, and controlling to navigate a competitive sandwich market, set itself apart, and ensure efficient operations and fulfillment of business goals.
Step-by-step explanation:
The question seeks to understand how Potbelly, a sandwich chain, operates within a competitive market under the leadership of Alan Johnson by engaging in the four classic management functions: planning, organizing, leading, and controlling. Under Johnson's leadership, Potbelly would likely engage in planning by developing strategies to differentiate itself from competitors and appeal to consumers in a crowded market. The organizing function would be demonstrated through structuring the company to efficiently produce and deliver its products, potentially adapting its operations to deal with the McDonaldization of society. The leading function could involve inspiring employees to embrace the company's vision and values, and fostering a positive and productive work environment. Finally, the controlling function would entail monitoring performance and making adjustments to stay on track with business objectives and customer expectations.