What a manager do in a company?

Managers are also responsible for arranging work to accomplish the organization's goals. We call this function organizing. When managers organize, they determine what tasks are to be done, who is to do them, how the tasks are to be grouped, who reports to whom, and where decisions are to be made.

Every organization includes people, and a manager's job is to work with and through people to accomplish organizational goals. This is the leading function. When managers motivate subordinates, influence individuals or teams as they work, select the most effective communication channel or deal in any way with employee behavior issues, they are leading.