bass note only

Is there a style or setting so that the bass will play only the roots of the chord in the appropriate groove? For example, in a swing style if the chord was C7 the bass would simply play four C notes in the appropriate tempo/groove per measure of the chord (not a single sustained note as I...

I recently stumbled on a workaround way to Playback bass notes only, without having to precede the W/C notes by an N.C. It's a bit unsightly on the chart (but no more so than an unwanted N.C.) and an Error Message appears during countdown that you remove my tapping "OK" once, but it works...