Select NURBS object. > Modify panel > Create Surfaces rollout Dependent Surfaces group box > Transform
Select NURBS object. > Modify panel > NURBS toolbox > Create Transform Surface button
A transform surface is a copy of the original surface with a different position, rotation, or scale.

Surface created as a transform
To create a transform surface:
In a NURBS object that contains at least one surface, turn on Transform.
To move the transform surface, click and drag the surface you want to duplicate. To rotate or scale the transform surface, click the parent surface, click to turn on Sub-Object on the Modifier Stack rollout, choose Surface from the drop-down list, and then use a transform to rotate or scale the transform surface.
When you use Move to create the transform surface, it simply copies the parent. (It doesn't exaggerate curvature as an offset surface does.)
Axis constraints don't apply to the creation of transform surfaces. You can click to create the surface in place; then once it is created, transform it using constraints.

The Flip Normals control lets you flip the surface normals at creation time. (After creation, you can flip normals using controls on the Surface Common rollout.)
You can later transform the transform surface as a surface sub-object, and you can animate surface sub-object transforms.
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