Almost all the info you need can be found there.
In short, there’s a crisis regarding medical internships for medicine graduates. Where graduates require a year of interning to fully qualify as doctors and thus get jobs, there is currently a recurring shortage of available internships each year leaving graduates behind.
Australia currently has a shortage of doctors, and instead of helping our graduates fill the gaps in the medical field we have, doctors are instead hired internationally and moved here. Why give the short end of the stick to the talent we already have onshore?
If you feel like this is something to get on-board with, hit their website for more details.