Final answer:
Don is fulfilling the role of a manager, utilizing key management functions such as planning, organizing, leading, and controlling to achieve company goals.
Step-by-step explanation:
Don is engaging in the role of a manager. Management involves the coordination and administration of tasks to achieve a company's goals with efficiency and effectiveness. The functions you've described - planning, organizing, leading, and controlling company resources - are quintessential management activities that form the backbone of the management process.
More specifically, these functions are traditionally referenced as the four functions of management. Planning involves setting objectives and determining a course of action for achieving those objectives. Organizing requires the manager to allocate resources (human or financial) to ensure the plans can be executed properly. Leading involves the social and informal sources of influence that a manager uses to inspire action taken by others. Finally, controlling involves ensuring that performance does not deviate from standards and involves establishing performance standards and monitoring the output of employees to ensure each employee's performance meets those standards.