TogglePin (Pinning Tacks) - reaper-csi/reaper_csurf_integrator GitHub Wiki

TogglePin allows you to "pin" a channel in your project to a set fader so that even when you bank, that channel remains stationary. For this to work, a TrackNavigator is required. Here's an example excerpted from MixMonkey's setup.

Zone "Channel"
    TrackNavigator
    Shift+Control+Select|       TogglePin
ZoneEnd

Holding down Shift+Control and pressing the Select button on a channel will pin that channel to the track it currently shows. When you bank the surface that channel will always show that track. To unpin just press Shift+Control+Select again.