Found a way to Playback bass notes only ...

[nimbleswitch]

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.

EDIT: I've now reposted it as improved by Dalemac's refinement, substituting a period for the W.

2ND EDIT: I've now reposted it using a "W./" for each first bass note following a chord:

Bass Notes Only - JHC