Adjusting the volume across all tracks

Good day, Audacity people. I have a multitude of tracks and it seems that the gain of some or all are set too high. I will adjust them manually back to 0, but in the future, I’d like to do this across all tracks. Can this be done? Thanks, as usual.

You can “Amplify” or “Normalize” all tracks together (just select all the tracks, then apply the Amplify or Normalize effects).

There is currently no built-in way to adjust more than one track Gain sliders at a time. They can only be adjusted individually.
I think it would be possible to create a “Nyquist Macro” to adjust multiple track Gain sliders at the same time. (See: