To Set the Default Collision Options

To set the default collision options

1. Click the application button Options.
2. In the Options Editor, expand the Interface node, and click the Viewpoint Defaults option.
3. On the Viewpoint Defaults page, click the Settings button.
4. In the Default Collision dialog box, select the default options you want Autodesk Navisworks to initialize with.
   
5. Click OK to return to the Options Editor.
6. Click OK to save the changes.