How does the waitlist work?

How does the waitlist work? I’m enrolled for one section but I’m trying to get into another section (same prof, better time). It says I’m number 1 on the waitlist but idk where to go from here. Will it notify me via email if one more person drops and the class becomes available? And will the class be given to me even though I’m already enrolled in another section?
it’ll notify you if someone drops it and you get moved into the class from the waitlist. as long as you don’t have another class on the same day at the same time it’ll be added to your schedule
You can talk to the professor about changing. They may not care if the room has enough seats
You will not be added to the class if you are enrolled in another section of the same class