Orientation Tab
Use this tab to adjust the real-world orientation of your model.
Note: This tab is only available for 3D models.
Up
X, Y, Z
Specify the X, Y, and Z coordinate values. By default, Autodesk Navisworks takes the positive Z-axis as Up.
North
X, Y, Z
Specify the X, Y, and Z coordinate values. By default, Navisworks takes the positive Y-axis as North.
Tip: If you want to restore the default values, click the Defaults button.