There were 30 or more of us being interviewed in one rooom. It was basically a group interview and 6 or more people were grouped on different tables and we all were given an introduction about the company, an activity to describe top 3 chosen qualities needed for the job, 1:1 interview and health questionnaire and something interesting about ourselves. We also had a fun activity included that required teamwork. My advice to other people would be to dress smart and believe in yourself. You'll also be required to make presentations to the entire group of people present. My advice would be to make yourself heard and noticed within your group. Show that you have good communication and listening skills also.