Arranging : Time, Tempo, Meter, Key, and Chords : Tick- and Sample-Based Timebases : Alternate Playlist Timebases

Alternate Playlist Timebases
When you change a track’s timebase, you can choose to apply the timebase change to that track only, or to the active Playlist and all alternate playlists for that track.
To configure a timebase change to affect timebases of all playlists in a track:
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Click the Timebase selector (or Track Height Selector) and enable the Selection Changes Alternate Playlists option.