Office management is a profession involving the design, implementation, evaluation, and maintenance of the process of work within an office or other organization, in order to sustain and improve efficiency and productivity.

An office manager is responsible for monitoring and reviewing systems, usually focusing on specific outcomes such as improved timescales, turnover, output, sales, etc. They may supervise or manage a team of administrators, allocating roles, recruiting and training, and issuing assignments and projects.

via en.wikipedia.org