To show all deformers
- Select Display > Show > Show Deformers > All.
To hide all deformers
- Select Display > Hide > Hide Deformers > All.
To display intermediate deformation object(s)
- Select the object(s) being deformed.
- Select Edit Deformers > Display Intermediate Objects.
To hide intermediate deformation object(s)
- Select the intermediate object(s) being displayed.
- Select Edit Deformers > Hide Intermediate Objects.
- Change the deformer.