21. The Associate Secretary General shall keep the register of declarations of aptitude up-to-date and shall enter therein the list of the candidates declared apt to be appointed as commissioners to the board.
A declaration of aptitude is valid for a period of 3 years from its entry in the register.
The Associate Secretary General shall strike out an entry upon the expiry of the validity period of the declaration of aptitude, or when the person is appointed as commissioner to the board, dies or asks that his entry be withdrawn from the register.