Paragraph 6

On a casual vacancy occurring in the office of chairman or vice-chairman the vacancy shall be filled by the members at a meeting held as soon as practicable after the vacancy occurs.

A member appointed under this paragraph to fill a casual vacancy in the office of chairman or vice-chairman shall, unless he resigns that office or ceases to be a member, hold that office during the remainder of the term for which the chairman or vice-chairman whom he replaces was appointed.