Chief executive officer (CEO) is the position of the most senior corporate officer, executive, administrator, or other leader in charge of managing an organization – especially an independent legal entity such as a company or nonprofit institution.
A chief financial officer (CFO) is the senior executive responsible for managing the financial actions of a company. The CFO's duties include tracking cash flow and financial planning as well as analyzing the company's financial strengths and weaknesses and proposing corrective actions.
A secretary or personal assistant is a person whose work consists of supporting management, including executives, using a variety of project management, communication, or organizational skills. However this role should not be confused with the role of an executive secretary, who differs a great deal from a personal assistant.