Room-by-room letting. A newer feature, not switched on for every account yet.

Open a property and choose Occupancy. It manages a property let by the room — each room, who is in it, and what it charges — instead of one tenancy over the whole place.
The picture above shows it: three rooms, one of them let.
1 of 3 rooms occupied sits at the top with a progress bar, and + Add room adds another.
This tab is the rooms — naming them and tracking which are let. The contracts, tenants and deposits themselves live on the Tenancy tab.
Occupancy only appears once a property is set to be let by the room — and you set that yourself. Open the Tenancy tab and find the Letting type card. Its chip reads Whole property, Joint let or Let by room.
Click the chip, or Edit, to open the Letting type window.
Beside the chip, Who lives here opens switches for HMO, Student let and Company let. They save as you switch, with Undo. Company let is hidden on a property let by the room. The company lets and student lets article explains them.