Induction is likely to be basically orientation. Tours of school/campus, talks about training you might need or have to do, how progress is monitored, upgrades, hopefully introductions to other facilities and support services such as library, SU etc. Make the most of lunches, it's most likely the only time you'll get anything free. It's also a chance to meet other PhD students. You're likely to spend a stupid amount of time standing in queues. I didnt see my supervisor till week 2, didnt do anything research-wise till week 3, which I found quite frustrating.