Have you ever studied animals? Most of the animal species that have survived are extremely well organized. This means that they have a very well-developed hierarchy. It is known exactly who has to do what to contribute to the community in the best possible way.
As far as large communities are concerned, bees and ants are the most familiar to us. They have their queen, workers, those who take care of the eggs and later the young, those who supervise the work, military leaders, food collectors, food storekeepers, builders and many others. Everyone has their place and their task.