All the persons in charge of assisting the others.

a person whose job is to manage the processes and costs of making goods.

the person in charge of branding, product promotion, new product development, market study, customer relationship etc.

the person who organizes and manages an organization's or an individual's financial portfolio; prepares financial reports, oversees investments and helps with cash management. 

This manager is in charge of the employment, training, support, records of the employees.

the highest-ranking person in a company, responsible for taking managerial decisions.

He heads up the board of directors for a company.

It is a group of individuals elected to represent shareholders.

a high level independent corporate executive with overall responsibility for internal audit.

an official on the board of a company who deals with financial and legal issues.

A group of individuals or an institution that owns one or more shares of stock in a public or private corporation