Tee Emm, your best bet is to go have a look at the part 61 MOS, it'll tell you what you need.
But a bit more specifically go have a look at the test form:
https://www.casa.gov.au/files/form61-1496pdf
Item 49 AME.5 Perform rejected take-off – multi-engine aeroplane.
Then go look up AME.5 in the Part 61 MOS Volume 2, it's a little vague, there of course can't be anything specified by CASA as it depends on the Aircraft type, could be contained in your POH/AFM as to the exact Manufacturer procedures for practicing it.
There might be a CAAP on it but I'm not really sure, you'd have to look that up yourself.