This document discusses leadership and management in organizations. It describes how management can either impose their leadership or share leadership, with shared leadership fostering greater autonomy, self-control, motivation and achievement among group members. Both formal and informal groups form in organizations, and managers must manage sentiments to bring cohesion. Cohesion is influenced by factors like homogeneity, communication, group size, external pressures and the status of the group. Effective leadership is important for the health and function of groups.