After you have created a room type, you need to add all your rooms (or units) of that type. The room type is so far just an empty placeholder waiting for units to be added.
- Once you have created a room type, in Settings -> Accommodation, click “Add new unit”.
- Enter a unit name. Usually it would be the room number, for example “101”.
- Repeat the above steps for each additional unit/room you have of that particular room type.
This video explains how to register units: