After you create the sine deformer, its handle is displayed in your scene and its nodes are listed in the Channel Box. The nodes include the sine handle node (default name: sinenHandle), the sine handle shape node (sinenHandleShape), and the sine deformer node (default name: sinen).
You can edit the effects of the sine deformer by editing the sine handle node and the sine deformer node. You can move (translate), rotate, and scale the sine handle to edit the effects of the deformation. You can also edit the sine deformer node’s keyable attributes (channels), which are displayed in the Channel Box.
You can edit bend deformation effects in a variety of ways. See Edit sine nonlinear deformers.