When using the limiter, allow the user to select which tracks should be affected.
What is the problem?
When using the sidechaining option with the limiter, it is not possible to exclude individual tracks from the effect. In practice though this often desirable (e.g. not every sound should duck away from the kick).
What do you want to achieve?
An option in the FX settings menu which allows the user to select which tracks should be affected by the sidechain limiter.