This document discusses formal and informal groups within organizations. Formal groups are established by the organization to achieve goals, while informal groups form spontaneously based on common interests, friendships, or proximity. Some potential advantages of informal groups include making the overall system more effective, lightening the workload on management, and improving communication. However, informal groups can also develop undesirable rumors, resist change, and operate outside of management's control. The document provides guidelines for management to understand and integrate informal groups while avoiding threats to them. It also discusses characteristics of effective committees and planned approaches to decision making in groups.