You can create as many rooms as you like in the application and identify with names and colors that you can use to identify them easily.
By default, in every room, you can accommodate all the animals you want in the same stay (animals from the same customer); thus the system controls the occupation.
But if you have special rooms where you want to host several animals from different stays and owners, you can use this tip for configuration:
If your room is #1, you can create:
So you can do three different stays in the same room.