First you do two HR phone calls in which they ask about your english and studies. After taking an english test and a personality/IQ test. There is a group interview in which you have to collaborate with other applicants on a case study based on a project which was proposed. You get some time to read and prepare your ideas, and then you have to have a group converstation to decide how the project will develop. The final step is a personal interview with someone of the department.