Management is always combination of Team work and Leadership where all the memvers of team strive together for effective runnjng of organization and all members take complete ownership. Management is divided into people management where a leader shall manage his team and the combined efforts only will yield fruitful results, Hence regarded as Group activity. Team work and Leadership are essentially traits of successful management practice.

Management is commonly defined as activity done by people to mainain and manage the business environment and structure. It cannot be done by  a single person, as it invovles huge and wide variety of process. Not all people knows each and everything, as company is a huge enterprise. so to manage it a group called MANAGEMENT is formed, in it there will be people who are specialised in different area. This can give each and every knowledge around the company to it, which can help ito sustain and perform in its full capacity. Hence Management is called a group activity.

Hope this helps.