To edit Blend Shape channels with the Channel Box
- Select a blend shape deformer node (default name: blendShapen).
- In the Channel Box, click the name of the channel you want to edit.
- In your scene, -drag left or right to change the value of the selected channel.
As you move the mouse, note that pressing the key will give you finer control, and pressing the key will give you less control.
To edit Blend Shape attributes with the Attribute Editor
- Select a blend shape deformer node (default name: blendShapen).
- Open the Attribute Editor (Window > Attribute Editor or use the default shortcut +a).
- Edit the Blend Shape Attributes.