How to lower FX volume on RZX

Hi

I want to lower the FX volume cause its to high in relation to the tracks played.

During a transition I'm using LPF Echo FX triggered from the configurable knobs on the controller.

Can I lower the output volume on a particular FX and how?

I am not talking about the usual ones that have dedicated buttons and volume/parameter, I'm talking about the FX where you can assign a whole list.

Thanks