(1)This section applies in relation to a provision of part 1 or 2 that refers to—
(a)a thing required or permitted to be done by or in relation to a buyer or seller of a lot or proposed lot; or
(b)a thing having been done by or in relation to a buyer or seller of a lot or proposed lot.
(2)The thing may be done, or the thing may have been done, by or in relation to the buyer or seller either—
(a)personally; or
(b)through an agent who is authorised to act for the buyer or seller in relation to the thing.