CAR 157
Another of the many exemptions in here is for training at L/L, so if you have a desperate desire to do dual L/L, there are a number of flight schools thru Australia which conduct this course of training. You won't be able to do subsequent L/L flying solo, unless in the course of your work,as detailed by Wiz.
For the basic details on this course see CAO 29.10 , but each school has a course which includes more than the basic, which many consider is too limited anyway.
cheers