You can paint rigid skin point set membership in the same way you paint deformer set membership. For more detailed information, see Paint deformer set membership in the Deformers guide.
Manipulating the joint lattice flexor’s influence lattice
You can manipulate the joint lattice flexor’s influence lattice in the same way that you can manipulate the lattice deformer’s influence lattice. You can move, rotate, or scale the lattice, or you can move, rotate, or scale lattice points.
Manipulating bone lattice flexor’s influence lattice
You can manipulate the bone lattice flexor’s influence lattice in the same way that you can manipulate the lattice deformer’s influence lattice. You can move, rotate, or scale the lattice, or you can move, rotate, or scale lattice points.