This quick tip shows how to record clip automation across every playing track in Ableton Live at once, instead of arming each track individually. In Live's Preferences, under the Record/Warp/Launch tab, set Record Session Automation In to all tracks.
With that setting in place, toggling on Session Record captures automation for all playing clips simultaneously. It's a small workflow switch that saves time when you're shaping multiple parameters live across a full arrangement rather than one track at a time.