The Drum Rhythm Tool works just like the Rhythm Tool except that it creates a drum beat for use when Custom Drum Beat is selected from the Metronome Drum Settings dialog.
The top part is the snare drum and the bottom part is the bass drum. Select a ride cymbal pattern from the Instrument Sounds dialog box.
The length of the rhythm should be one measure so that it aligns with the downbeat of each measure. It will be repeated throughout and be used for the lead-in.
see also Instrument Sounds