I sent a motivation letter with my application, and received an online assessment invitation. You can go to the assessment platform (SHL) to try some sample questions but the actual assessment was quite different from the samples in terms of how you answered. Samples are all MC questions. Actual ones required me to move segments on a pie-chart to give the answer, move blocks on a schedule bar to fit all conditions etc. At the assessment time, before going into the real questions for scoring, I was given practically unlimited amount of time to try out those question types, so do practice a few times to get used to them, before the real game. Then I passed the test with a score in the 95% percentile range, and got to speak to the HR. She was nice and asked questions about my motivations of (e.g.) why I pursue my postgrad degree and some of my past experience. I think this part, for me, was quite heavy on about my motivations. I received their decision the same day of the HR interview.