Find Controller is enabled on the Map/Model level when you have selected a model variable which has been assigned to a Slider, Knob, Switch, List Input Device or Graphical Input Device on the Interface level. Variables which have been so assigned will display a small icon of the Slider, Knob, Switch, List Input Device or Graphical Input Device on their surface. Select the variable and choose Find Controller to navigate to the location of the Slider, Knob, Switch, List Input Device or Graphical Input Device on the Interface level.