A preset is a snapshot of the mute states of all the tracks. Applying a preset mutes or unmutes tracks as needed, so that after it's applied, the same tracks are muted as when the preset was created. Presets are especially useful for creating section changes, because applying a single preset is easier than muting or unmuting many tracks at once.
Presets are edited using the Presets bar. To create a new preset, use the Track menu's Preset command. A new preset initially has an automatically generated name, but you can rename it.
To update an existing preset, in other words to change its snapshot, do as follows: