The directors and secretary (or officers) manage the company. The shareholders (or members) own the company. In many private companies the directors and secretary are the shareholders of the company. A private company can have a sole director but he/she cannot also be the secretary.
Therefore, at least two persons are required when forming a limited company. Where there is more than one director, one of the directors may act as secretary. There is no restriction on the number of directorships an individual may hold. There is no restriction on the nationality or residency of directors or secretaries. Corporate directors and secretaries are allowed.