I applied online. The process took 2 months. I interviewed at Anheuser-Busch InBev (Louvain) in Mar 2011
Interview
First you have a phone interview, where you talk about your skills and your aspirations. Then you have an assessment center where you have to give a 5min presentation about something of your choice, followed by a group case and finally another interview. In the groupcase everybody had to defend their own project and come to a consensus on which projects would be chosen. During the second interview you go deeper on your skills, what you would do during certain situations and so on.