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of the declaration of aptitude, or where the person is appointed as commissioner to the board, dies or asks to be withdrawn from the register.