(1) The common seal of the Board shall be kept in the custody of the Chairperson, the Deputy Chairperson or the Secretary to the Board.
(2) The seal of the Board shall not be affixed to any instrument except by the authority of a resolution of the Board and attested by the signature of —
(a) the Secretary; and
(b) the Chairperson or in his or her absence, the Deputy Chairperson; or
(c) one other member of the Board authorised to act in that behalf.