Wix Bookings: 2 room calendars OR blocking a session length different than the displayed session time OR autoselect staff?

I'm using Wix bookings for my medical clinic but running into a huge problem. It's just me - one staff. However, I have two rooms in my office, so I can have two patients at once. I can't for the life of me get this to work in Wix bookings.

I'd like bookings to be available every 1/2 hour, so I have Booking Time Slots set to 30 min intervals: 11am, 11:30am, 12pm, 12:30pm, etc. Currently, if someone books a one hour appointment at 11am, then Wix Bookings blocks off 11-12 and no one can schedule anything in that hour time. This is the problem - because there's a second room, someone COULD come at 11:30.

The easiest solution is to list every session in the Wix Bookings system as a duration 30 minutes (regardless of the actual duration), so if someone books a session at 11, Wix only blocks from 11-11:30, and 11:30 is available to book. However, on the checkout and booking pages, there's no way to hide the session length, so patients think their appointment will only be 30 minutes, when in fact their appointment is an hour.

The next easiest solution is to have two "staff", being a Room 1 and a Room 2. However, this is very confusing to patients when they go to book an 11am appointment and are prompted with "Choose your staff - Room 1 or Room 2". Also, this could result in two patients booking an 11am slot, when I want it staggered - 11am, then 11:30am, then 12pm, etc. I can't get two patients in both at 11am.

Those are my only two ideas. Does anyone have a suggestion or know what to do??? Thanks so much.