I only use it on one floor, but according to the app it can save three maps (floors). You then select the active one or it probably recognises it when positioning. For a new floor, you simply select "Create map" and let it go through the rooms once.

I don't know how many floors it can save, but what I can say is that this function is not useful in my eyes. The reason is that the station has to be moved to the new floor each time. Simply moving the hoover to another floor does not work (at least not for me). When the hoover is moved to a new floor, it automatically creates a new card. The problem with this is that if the station is not positioned exactly the same the next time, the hoover can no longer find its way around. Then the map has to be deleted again and created anew. For this reason, I bought a device for each floor, which eliminates this problem.