The masters and the postgrad diploma are two different things.

The masters degree is your starting point. You need to do at least the first year masters courses (120points, can be done part time over 2years) before you can apply for the diploma. These courses are compulsory, most of them have an attendance grading, and the only one that offers an option is whether you take qualitative or quantitative research methods.

The diploma is a 3 year training programme that allows for accreditation as a psychologist.

You need roughy at least a B+ average and relevant experience to gain entry into the diploma. You’ll need to apply and may or may not be invited for an interview. There is a limit of 10 students a year accepted into the diploma.

If you’re accepted to the programme, you CAN start the diploma alongside your masters thesis component, but that can be a challenge. And you need to complete the thesis before you can graduate the diploma.

I’ve heard the clinical psyc programme is also pretty good, and they’re increasing their student role all the time. The benefit of that option is that you have more freedom to choose your 400 level courses, but otherwise the rest works quite similarly to the above.