After you create the bend deformer, its handle is displayed in your scene and its nodes are listed in the Channel Box. The nodes include the bend handle node (default name: bendnHandle), the bend handle shape node (bendnHandleShape), and the bend deformer node (default name: bendn).

You can edit the effects of the bend deformer by editing the bend handle node and the bend deformer node. You can move (translate), rotate, and scale the bend handle to edit the effects of the deformation. You can also edit the bend deformer node’s keyable attributes (channels), which are displayed in the Channel Box.

See Edit bend nonlinear deformers and bend.