CAO 82 only has the multi command requirement for operators with a LOW capacity AOC. Operators with a high capacity AOC are NOT bound by any regulatory 500 multi in command requirement, and any such stipulations are purely a creation of the company.
Most in GA, and a couple of posters in this thread, mistakenly believe the 500 multi in command applies for all operators and is bypassed by Qantas (for cadets etc) by virtue of an exemption. This is NOT the case. For a high capacity AOC, all you need is a valid ATPL. And the command hour requirements for an ATPL are a total of 250 hours (can be single engine) of which 150 can be ICUS. So in fact all you need is 100 hours in command!
To support the above, you will notice that Jetstar no longer have a mandatory 500 multi in command requirement. They have put an "and/or" criteria which allows them to capture experienced FO's that don't necessarily have multi command experience.
In saying all of this, I can testify to its accuracy only as far as 2001. It may have changed, but I'm not aware that it has.
I suggest a couple of the posters do a little more research in the CAO's re low capacity v high capacity AOC rather than shoot from the hip.
MB.