Create a 3D Document

Use New 3D Document from 3D... from the context menu of the Navigator’s 3D Documents folder.
Use New 3D Document from 3D command from the context menu of the 3D window
Use a menu command (Document > Documenting Tools > New 3D Document).
3.
With the Floor Plan window open, use the New 3D Document from Floor Plan... from one of the following locations
a menu command (Document > Documenting Tools > New 3D Document).
Note: Optionally, the name of the source view can be set as the default 3D Document Name.