3D PCB document
When you are ready to validate the fit and function of your electronics design in the context of the mechanical assembly, you can create a 3D PCB from the 2D board layout. As with the schematic and 2D PCB documents, the 3D PCB document is part of the Design document when you follow this process.
From the 3D PCB document toolbar, you can move components, flip them to the opposite side of the board, add holes in the board, and then push changes back to the 2D PCB document, to keep both documents synchronized.
Figure 1: 3D PCB
Note: If you create the 3D board independently, you can link it to an associated 2D PCB document, if you have one.