All tagged volume ducking

Ask Patch Foundry: Auto Swell

We received this email from a reader this week: 

Hi Eric,

I'm very new to Mainstage and I have been hunting for a way to auto swell. I can see that you can use a compressor in Logic, but I can't see how to do it in MS.

I have a swell pedal on it's way, but would prefer to automate for one song.

Thanks in anticipation,