I heard this, I heard that....
Ok. You need minimum 1 year C class experiance to get an MR license. Your years on P's count. Hence the youngest you can hold an MR license is 17.5 years. There is no "lerners permit" for MR, hence you can have L's up and a car license. (the only way to learn to drive)
You can drive a CFS applaince P1, if you hold the license class for that vehicle. It then gets murky. Ir you have a C class license, and are on your P's for it, but have an MR license, you can drive vehicles requiring an MR license P1, BUT not any vehicle that requires a C class license as you are still on P's.
did you know that if you have a car licence that you can drive the appliance to the job but a truck driver has to drive it back??
Find me written official proof of that. Ill put money on you not being able to find it. (the other way around yes, but NOT an unlicensed driver under P1 conditions.)
Instead of sitting here looking at this, or making crap up, go and look at the god damn SOPS and COSO's.