First appointment with the consultant

I know this subject probably comes up fairly regularly, but I couldn't find answers to my specific questions, so sorry if this is a repeat of another post.

I have my first appointment at the chest clinic next week and have some questions on what to expect. I understand that procedures will probably vary between hospitals, but it'd be nice to have a vague idea about what will happen. How long will the appointment last? I expect they will want to do spirometry testing, what other tests are they likely to do and when will I get the results? Are they likely to adjust my treatment on the first visit? My whole life at the moment seems to be revolving around this appointment, I know they won't have an magic wand, but anything that can improve things for me at the moment would be a god-send.