Go to the Menu, select  ‘Locations/Venues’ and the venues that you have added appear (e.g. Home, Office). 

In order to add a venue, select + (top-right corner of the screen). For editing or deleting a venue, select its name and the details appear (name, picture, address, rooms that you have added and which you can delete, the gateways that you have

added, as well as the option of Deleting a location/venue).