Linda,
Bill also contacted me at my store and after hours of reading and trying to contact Casio, I've discovered that there is no way to turn on the metronome because it is only a display and no sound. Casio agrees that you should be able to download styles from their website soon that will mimic a metronome by using a style. I told Bill he would have to purchase an aditional metronome if he needed this feature.
George Kaye
Kaye's music Scene
Reseda, California