I’m not in front of an Avid, but I believe if your turn on ‘auto-patch’ (timeline settings, maybe?), it will automatically patch the source tracks to the active record track. Just make sure you only have on record track active. I use this in conjuction with the V1/2 keys already mapped.
I don’t think there is a mute or lock tracks function in either the menu or the command pallette. If its not there, you can’t map it – unless someone knows different.
Jon
“The Almighty tells me He can get me out of this mess. But He’s pretty sure you’re F%$#*D!”