Mapping and adding another room

When I first used the L10 prime I mapped the main room and the cleaning is going well. I need help to understand how to map another room and add it to the cleaning routine. This is at a different level so I would carry the robot over the ledge to the new room.

You can carry station and the robot on the different level and get a new map created. For vacuuming, you don't need to take station to different level. But if you need mopping, you'll have to carry the dock on the different floor.