When revising a walkthrough, reposition the path to change the route through the model.
As you edit a walkthrough path, you can see the results of your changes on the view.
- Open the walkthrough and set up views.
Open other views so that, as you edit a walkthrough path, you can see the results of your changes to the walkthrough.
- In the Project Browser, right-click the walkthrough view name, and select Show Camera.
- To move the entire walkthrough path, drag the path to the desired location. You can also use the Move tool.
- To edit the path, click Modify | Cameras tab
Walkthrough panel 
(Edit Walkthrough).
- Select Path in the Controls drop-down list. The key frame indicators become controls along the path.
- Drag the controls to reposition the path.