Navisworks cannot read native ArchiCAD files directly. Use the file exporter to save your files in NWC format, which can be opened in Navisworks.
The file exporter is available for ArchiCAD v16 to v19.
The export add-on for ArchiCAD is available from both the 2D and 3D windows. All standard ArchiCAD elements and library parts can be exported provided they have a 3D representation, and any others are ignored. The file exporter saves both standard materials and custom GDL script materials.
ArchiCAD cutaway plane settings does not set the Navisworks section plane; it is used to export items that are physically reduced by the plane.