These are stand-alone sessions so you can start attending sessions or stop attending sessions as you like. You can leave a session anytime you like, but best to try to start on time - if we don't have people in the session on time it can be automatically cancelled. You can stop me at any time. If we have multiple people in the session I may have to limit a student who might be dominating the conversation. If we have time at the end you can ask any question you like on problems you are having.