You need to create the send parameter track by right clicking the send you want to automate. So the resulting parameter track should be named something like “Send (Send 1)”. Then you need to turn up the send dB on the send track. Just like level/gain automation, the send automation is applied as an offset to the set send level.
I’ve now made this change for the next 2.20 release:
Fix: Drag and drop of a device mapping on a track now checks if the mapping is already assigned in the track effect chain. This eliminates the issue where accidentally dragging an effect mapping in the track header would create a duplicate instance.
