My potential MSc supervisor doesn't visit his research lab ever, should I be concerned?
Do members of his lab have regular meetings with him, either one-on-one or as a group? Sometimes it's better to have time set aside specifically for your questions, rather than someone breathing down your neck in the lab as you try to formulate your proposal. In my experience PIs are super busy and neglectful in general. Also it's ok to ask anyone that can help you how to get where you need to go. They were probably in the same boat before you got there.