Locking a track is a great way to avoid editing mistakes, as it helps prevent unwanted changes to a specific audio track. Once locked, you are no longer able to drag and modify the track to make changes.
To lock a track, click on the snowflake symbol under the track's name. This will prevent any changes from being made to the track.
To unlock a track, just click on the snowflake icon again and the track will become available for edits.