MIDI automation question – Tracktion Forum

I am setting up for some MIDI automation, learning the moves here. So, I have a slider on a MIDI device that I have set up to control the volume of one track. After I get that set and I want to adjust the volume on another different track, how can I turn the MIDI control OFF on the first track, so I can move to another?
When I set the volume slider on my device to control MIDI on the first track, and then do the same on the next track, my MIDI slider moves the volume plug in on BOTH tracks, I can’t figure out how to disable MIDI control on the first track. I hope that’s clear! I know there must be an easy thing that I am missing here, thanks!