Applications are always open on their website. If your profile is pciked you are invited to a casey bot interview that tests your casing skills. One is enrolled to an online platform where you can engage with other intervuew. You practice with for atleast 3 months. You get to have a casing workshop with peers a few weeks to the first round of interviews. The interviews entail casing which I found to be quite rushed followed by fit questions. Each round has two parts that caN either be on the same day or on different days. Practise but don't over think it. Try as much as possible to case with actual consultants.