IPCB Fader . .. Path??

I have my ballyhoo movement on a fader. I have it set to a high rate so that when the fader is at the top, it does some crazy movement. But at the bottom of the fader, I would like the rate to be really really slow for slow movements.

Is it possible to set a Path to the fader, or maybe the effect that will make it slower at the bottom of the fader, and grow exponentially as the fader gets near the top?

(sorry for all the IPCB questions in the forums, I'm still trying to grasp all the concepts of what it can do) Thanks!
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