The following sections commence on a day to be fixed by proclamation—
(a) sections 5 and 14;
(b) section 16, to the extent it inserts new section 303;
(ba) section 18, to the extent it inserts new definitions conduct, disallow, disallowance notice, food business rating scheme and prescribed requirements;
(c) sections 52 to 63;
(d) sections 70 to 72.