Multiple room question

This may be a really simple answer that I’m just

missing, but here goes.

I’ve got someone who wants me to run their listing on Airbnb and bookingdotcom .

The difference this time is that they are the first client I have had that is renting out bedrooms in their house.

On Airbnb they have a listing for each room (3), but on bookingdotcom they have 1 listing with 3 available rooms.

So how do I set this up in OwnerRez? Can anyone point me towards a support article on this or if anybody has any experience of this? 
Advice would be appreciated.

We are looking to do the same thing. Rent out whole space or just rent out rooms. Following

You'll want to set this up for mutual blocking. I have a property that is 5 acres and has 3 units on it. I have them set up as "rooms" on BDC. But in OR, its all controlled by mutual blocking. Here's how to set it up in OR: https://www.ownerrez.com/support/articles/combined-properties-blockoff-lockoff