Isolate Clash Results in the Scene View
In the Clash Detective window, click the Results tab > Display Settings show/hide button.
To hide all items that obstruct viewing the clashing items in the Scene View, select the Auto Reveal check box. When you click on a clash result, you can see the clash when zooming in on it, without having to move location.
To hide all items not involved in the clash, select Hide Other from the Isolation drop-down list. This enables you to focus better on the clashing items in the Scene View.
To dim all items not involved in the clash, select the Dim Other from the Isolation drop-down list. When you click on a clash result, Navisworks turns all items not involved in the clash to gray.
To set transparent dimming of all objects not involved in the clash, select the Transparent Dimming check box. This option can only be used with the Dim Other option, and will render all items that are not involved in the clash transparent, as well as gray. The level of dimming transparency can be customized in the Options Editor. By default, 85% transparency is used.
Tip: Try using this option as you highlight all clashes in the Scene View (by selecting the Highlight All check box). You can see the clashes through surrounding objects.