To manipulate bend deformer handles

-click and move the mouse to edit.
To edit bend deformers by moving, rotating, or scaling the handle
(Linux and Windows) or
(Mac OS X) key, move the pivot point, and then press the
or
key again.
To edit bend constraint channels with the Channel Box
One quick way to select the bend deformer node is to select the object being deformed, and then select the bend deformer node in its history from the Channel Box (under INPUTS).
Note that you can control which attributes are listed as keyable attributes (channels) in the Channel Box with the Channel Control editor (select Window > General Editors > Channel Control).
-click and move the mouse to the left or right. By moving the mouse, you interactively change the value of the selected channel.
As you move the mouse, note that pressing the
gives you finer control, and pressing the
key gives you less control.
To edit bend deformer attributes
+a.
For more information on bend deformer node attributes, See bend.
(Linux and Windows) or
(Mac OS X) key.
The bend deformer handle, bend deformer handle shape, and bend deformer nodes are all deleted. However, the object still has the tweak node as an input node, so any tweaks you might have made are preserved. Also, note that the various input nodes that structure the evaluation of the deformation are not deleted.