In the Save As dialog box, select Autodesk Navisworks 2016 (*.nwc) in the Save As Type field.
Enter the name for the Autodesk Navisworks file, and browse to the desired storage location.
Click Save to begin the export process.
In the Export dialog box adjust the file exporter options:
Export GUIDs - select this check box to attach a Globally Unique IDentifier as a property to each item in the model. In Autodesk Navisworks Manage, GUIDs are used by the Clash Detective to track clashes.
Enable Library Part Instancing - select this check box to make instances of library parts rather than creating new items. This is only possible when multiple library part elements within the ArchiCAD model have exactly the same properties. Instancing these parts means a smaller NWC file, and shorter export times.
Note: In sectioned models, when this check box is selected all instances show the same sectioning as the original item (usually, the first library part in the file). If you get some unexpected effects, clear this check box.
Export Library Part Parameters - select this check box to save library part parameters (including the user-defined custom parameters) as item properties in Autodesk Navisworks.
Export Current Story Only - select this check box to export the current story only.
Clear this check box to export the whole model. The default view is determined from the bounding box of the model.