7. Subject to the provisions of the foregoing Regulations, the term of office of a representative member shall be three years, and the term of office of an appointed member shall be two years, provided that—
(a)any member may retire by notice in writing to the Secretary of the Committee;
(b)a member nominated or appointed to fill a casual vacancy shall act only for the unexpired portion of the term of office of his predecessor; and
(c)a member whose term of office expires shall continue to act as a member until a successor is nominated or appointed.