1. In an open light graphics representation, select a subassembly component in the Model Tree or graphics window.

2. To expand thumbnails to the next level, right-click and choose Thumbnails > Expand 3D Thumbnail to Next Level. All next level components now appear in the Model Tree and graphics window as light graphics representations.

3. To expand thumbnails to all levels, right-click and choose Thumbnails > Expand 3D Thumbnail to All Levels or double click in the graphics window. All levels of subcomponents now appear in the Model Tree and graphics window as light graphics representations.

4. To set a subcomponent to light graphics representation, right-click and choose Thumbnails > Expand 3D Thumbnail to Selected. All subcomponents on the same level now appear in the Model Tree and graphics window as light graphics representations.