First they sent an online quantitative test, which was very easy, and an english test, also very easy. Then they invited for a group interview where they did a case study about the launching of a new suncream for a cosmetics company. Then they invited to the assessment center event where they first gave a case study about a local bank with 6 sales reps to fight for the marketing budget. Afterwards they gave an individual case study of more than 20 pages and full of numbers, and you were supposed to give a presentation about the profitability goals for the next 3 years. Finally they did a panel interview 2on1. One of them was taking notes and the other was scrutinizing your resume deeply to force you to break in the end.