It's a job simulation, you have several emails to reply and also an 1-1 interview with behavioural questions and a group interview which you will be given a material to prepare and then come up with solutions as a group. Finally, you will draft an email to update your manager based on the discussion

After submitting application form I did several online test which are quite easy if you prepare for them. Then, I was contacted by someone from hr to clarify my degree completion date and when I will receive transcript. Having sorted this, I was invited to assessment centre. It consisted of a group case study in the middle of which they gave us additional information which made it a bit trickier. Overall, good experience!