Story names and levels are defined in Story Settings.
See Story Settings Dialog Box.
Each story in the project is listed:
•in the Navigator’s Project Map
•in the Tab bar’s pop-up Navigator
•in the Tab bar’s Floor Plan context menu
The elevation of new construction elements placed on the Floor Plan are calculated relative to the element’s Home Story. Some elements (Wall, Column, Zone) can also be top linked to any story in the project.
For more information, see Home Story and Define Top Link for Wall, Column, Zone or Stair.