The best way to access the tempo and ruler controls in Audition is to right click on the ruler near the top of the screen.
Tips & Tricks Tempo and Ruler Controls in Audition
Navigate to Effects > VST3 > Effects > PG Music Inc.Click OK in this dialog and select the first empty track in your project.Click the Scan for Plug-ins button and the Band-in-a-Box ® DAW VST3 Plugin should appear.Add the audio plugin directory C:\Program Files\Common Files\VST3.Start Audition and navigate to Effects > Audio Plugin Manager.Run the Band-in-a-Box ® Plugin installer and Install The FX Version of The Plugin.