It was a group interview. We were interviewed by two employees. They asked each of us to introduce yourselves and just tell them about yourselves. They asked us more general questions and then asked if we had any questions. The interview probably took around 25-30 mins. There was six of us there. It was quite relaxed and we were in a private office.
Made us fill out a form beforehand, when your availability is, how many hours you want to work, etc.