Tip 3: Group Objects for Convenience
When you import 3D models into Photoshop from external sources, you may well find that the objects appear as multiple 3D elements. When importing a model of a car, for instance, the wheels, body, steering wheel, windows, hubcaps, and so on might be separate objects.
If you need to move the entire car within the 3D scene, the process will be easier if you group the components together first. Select the top one in the 3D panel, hold down Shift and select the bottom one, and all the elements in between will be selected as well. Then, from the pop-up menu at the top right of the 3D panel, choose Group Objects. You'll still be able to select individual objects within the group, but you can also select the entire group just by clicking it in the 3D panel, and you'll be able to rotate, drag, scale, and move the whole group around the scene with much greater ease (see Figure 3).
Figure 3 Grouping objects allows you to move them more easily.