Cooperation
another aspect of group dynamics is cooperation which simply means working together willingly. Where people's tasks are interrelated or where a group of people have to accomplish one task then cooperation is not only essential but is critical, without it there would be no results.
Managers must concern themselves with cooperation because the survival of their organizations is in part determined by other organizations (external). But they also must guard against illegal cooperation e.g. collusion in price setting.
Cooperation between individuals and groups with the organizations (internal) is very important. For an organization to remain cohesive managers must seek willing internal cooperation because without it group goals cannot be achieved.