(1) The Commission may, at any time,—
(a) amend the code; or
(b) revoke the code and substitute another code.
(2) Sections 17 to 20 apply, with all necessary modifications, to amendments to, or the revocation and substitution of, the code under subsection (1).
(3) However, sections 17 to 20 do not apply to minor amendments that do not materially affect the code.