(1) Disclosure under section 303 must be made in writing before, or as soon as practicable after, the law practice is retained in the matter.
(2) Disclosure under section 304(1) must be made in writing before, or as soon as practicable after, the other law practice is retained.
(3) Disclosure made to a person before the law practice is retained in a matter is taken to be disclosure to the person as a client for sections 303 and 304.