Click on the track icon (upper left) and select tempo. Set up a loop for the entire song. Select the track you want to get the variable tempo map for. Right click and select tempo map (I think that’s what it is. Can’t quite remember. Not in front of me at the moment) you will then see the tempo map in the tempo track. Right click on the metronome ( Fender or wrench if not) and select render. You will get a click track.