The document discusses different perspectives on the key functions of management. It identifies the main functions as planning, organizing, staffing, directing, and controlling. Planning involves designing a future course of action and deciding how to achieve goals. Organizing is the process of coordinating resources to achieve organizational goals. Staffing involves recruiting and placing the right employees in jobs. Directing includes supervising, motivating, and leading subordinates. Controlling measures performance against standards and corrects any deviations.