Select an object. > Modify panel > Modifiers List > Object–Space Modifiers > SurfDeform
Select an object. > Modify panel > Modifiers List > World–Space Modifiers > SurfDeform
Select an object. > Modifiers menu > NURBS Editing > SurfDeform
Select an object. > Modifiers menu > NURBS Editing > SurfDeform (WSM)
The SurfDeform modifier works the same way as the PatchDeform modifier, except that it uses a NURBS Point or CV surface instead of a patch surface to apply surface deformation.