Real Dictionary

management
You can refer to the people who control and organize a business or other organization as the management.
uncountable noun: Management is the control and organizing of a business or other organization.
uncountable noun: Management is the way people control different parts of their lives.

management in American English
the act, art, or manner of managing, or handling, controlling, directing, etc.
noun: the act or manner of managing; handling, direction, or control

management in British English
noun: the members of the executive or administration of an organization or business