When the ViewCube obscures the model, you can hide it and display it again as needed.
In a 3D view, click View tabWindows panelUser Interface drop-downViewCube. Select to show the ViewCube or clear to hide the ViewCube.
Alternatively, click File tab Options. Click the ViewCube tab, select or deselect Show the ViewCube, and click OK. You can also use the drop-down lists in this tab to select the views in which to show the ViewCube, the on-screen position of the ViewCube, its size and opacity. Other controls on this tab allow you to select the snap behavior, compass display, and the view behavior when clicking on the ViewCube.