I recently interviewed with them in Paris and the process was as follows

1. Written case: Example, Footloose
   • 30 mins to read the case and answer the questions
   • 30 mins to present
   • 30 mins Fit
2. Group case (Round 2)
   • 15 mins for everyone to read the case
   • 30 mins to answer the questions
   • each member then has 15 mins to present with Q&A
3. Roleplay (Round 2)
   • 15/30 mins to discuss a pre-written script, questions focusing on "how would you react"
4. Partner Discussion (Final Round)
   • my final round was luckily very relaxed, informal discussion with a very cool partners

Hope it helps!