  We propose and analyse a nonlinear optical apparatus in which the direction
of asymmetric steering is controllable within the apparatus, rather than by
adding noise to measurements. Using a nondegenerate parametric oscillator with
an injected signal field, we show how the directionality and extent of the
steering can be readily controlled for output modes which can be up to one
octave apart. The two downconverted modes, which exhibit the greater violations
of the steering inequalities, can also be controlled to exhibit asymmetric
steering in some regimes.
