If the ViewCube is active, right-click the ViewCube and choose ViewCube Settings. If the ViewCube is not active, in the Options dialog box, 3D Modeling tab, under 3D Navigation, click ViewCube.
If the ViewCube is active, right-click the ViewCube and choose ViewCube Settings. If the ViewCube is not active, in the Options dialog box, 3D Modeling tab, under 3D Navigation, click ViewCube.