Subject to section 53, the ACMA may, by writing, delegate any or all of its functions and powers to:
(a) a member; or
(b) an associate member, if the delegated function or power relates to a matter connected with an inquiry, investigation, hearing or other matter specified in the associate member's instrument of appointment; or
(c) a member of the ACMA staff; or
(d) a person whose services are made available to the ACMA under subsection 55(1).