This document discusses the span of management, which refers to the number of subordinates a manager can effectively oversee. There are two main types of span of management: wide span and narrow span. Wide span involves managing many subordinates and is used at lower levels, while narrow span involves overseeing fewer subordinates and is used at top and middle levels. Factors that influence the span of management include the manager's abilities, the nature of the work, subordinates' capabilities, and communication techniques. The document also outlines Graicunas' theory of span of management, which identifies three types of superior-subordinate relationships: direct single, direct group, and cross relationships.