A group is defned as two or more interacting and interdependent individuals who come together to achieve specifc goals. Formal groups are work groups de€ned by the organization’s structure and have designated work assignments and speci€c tasks directed at accomplishing organizational goals. Groups and the stages of group development. A group is two or more interacting and interdependent individuals who come together to achieve specific goals. Formal groups are work groups defined by the organization’s structure and have designated work assignments and specifc tasks directed at accomplishing organizational goals. Informal groups are social groups. The forming stage consists of two phases: joining the group and defining the group’s purpose, structure, and leadership. The storming stage is one of intragroup conflict over who will control the group and what the group will be doing. The norming stage is when close relationships and cohesiveness develop as norms are determined. The perf...