Paragraph 12

On a casual vacancy occurring in the office of chairman or vice-chairman of the Commissioners, the vacancy shall be filled by appointment by the Commissioners from among the Commissioners holding office under paragraph 2(1) above at a meeting held as soon as practicable after the vacancy occurs.

A Commissioner 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 Commissioner, hold that office during the remainder of his term of office as a Commissioner.