All you need to do is awareness. See dangerous good, identify and refuse carriage.
CASR 92.085
(Group A) Acceptance of dangerous goods - pilots who accept or handle freight containing DGs.
(Group B) Acceptance of non-dangerous goods - pilots who accepts or handles non-dg freight
(Group C) Awareness - for crew who do not have any thing to do with acceptance or handling of baggage or freight - Airline crew who have ground staff.
(Group E) Acceptance of passenger baggage - pilots who accepts or handles passenger baggage.
Most charter pilots would do a combined B/C/E course, by whatever name the provider calls it.