Organizing involves determining, grouping, and arranging activities to achieve objectives. It defines activities and establishes authority relationships through departmentalization based on functions. An organizational chart illustrates all positions and their formal reporting relationships. Centralization concentrates decision-making at higher levels while decentralization delegates authority lower down. Span of control refers to the number of employees a manager can effectively oversee. Authority is the right to perform tasks while responsibility is the obligation to do so. Both formal and informal organization structures exist within a company.