[Google Calendar] Offer multiple appointment durations for client selection

Nice! I have some quick questions. 1. I noticed a conflict in your example - a dental appointment AND an open booking slot at 9 am on the same day. Has Google fixed that now? 2. I want to use this to book clients for my tutoring business. But what happens if a client makes an appointment, and then later wants o cancel it? Can the client do that himself, or do I need to do it? Is there a difference between a client cancelling and me cancelling? Does the time slot revert to available, or does it disappear forever? 3. I wanted to allow clients to choose either 30 minute appointments, or 1 hour appointments, but it looks like I can only offer one type, so I chose 30 minute length, and put them back-to-back. What happens when an appointment ends - are we all kicked off? In Teams, at my old job, an online appointment seemed to continue,until I ended it, except perhaps if it ran into another booked appointment. What happens here if one booked appointment runs up against another? Does the first client get kicked off abruptly? 4. Is there a Waiting Room feature? Note that I do have a Google One account (is this different from Google Workplace?)