You can get control of these things. I wouldn't want to do a whole song, but it works well enough for an example or two.
!NoteWorthyComposer(2.751)
|AddStaff|Name:"Staff"
|StaffProperties|EndingBar:Open (hidden)|WithNextStaff:Layer|Color:Highlight 1
|Note|Dur:8th|Pos:0|Opts:Stem=Down,Beam=First,Muted
|Note|Dur:8th|Pos:0|Opts:Stem=Down,Beam,Muted
|Note|Dur:16th|Pos:0|Opts:Stem=Down,Beam,Muted
|Note|Dur:16th|Pos:0|Opts:Stem=Down,Beam,Muted
|Note|Dur:8th|Pos:0|Opts:Stem=Down,Beam=End,Muted
|Bar
|Marker|Pos:1.75|Color:6
|Note|Dur:8th,Slur|Pos:0|Opts:Stem=Down,Beam=First|Color:2
|Note|Dur:8th,Slur|Pos:0|Opts:Stem=Down,Beam|Color:2
|Note|Dur:16th,Slur|Pos:0|Opts:Stem=Down,Beam
|Note|Dur:16th|Pos:0|Opts:Stem=Down,Beam
|Note|Dur:8th|Pos:0|Opts:Stem=Down,Beam=End
|Bar
|AddStaff|Name:"Staff-2"
|StaffProperties|EndingBar:Open (hidden)
|Marker|Pos:1.75|Color:6
|Note|Dur:8th,Slur|Pos:0|Opts:Stem=Down,StemLength=0,Beam=First|Color:2
|Note|Dur:8th,Slur|Pos:0|Opts:Stem=Down,StemLength=0,Beam|Color:2
|Note|Dur:16th,Slur|Pos:0|Opts:Stem=Down,StemLength=0,Beam
|Note|Dur:16th|Pos:0|Opts:Stem=Down,StemLength=0,Beam
|Note|Dur:8th|Pos:0|Opts:Stem=Down,StemLength=0,Beam=End
|Bar
|RestChord|Dur:8th|Opts:Stem=Up,Muted,HideRest|Dur2:4th|Pos2:0z
|RestChord|Dur:8th|Opts:Stem=Up,Muted,HideRest|Dur2:4th|Pos2:0z
|RestChord|Dur:16th|Opts:Stem=Up,Muted,HideRest|Dur2:4th|Pos2:0
|RestChord|Dur:16th|Opts:Stem=Up,Muted,HideRest|Dur2:4th|Pos2:0
|RestChord|Dur:8th|Opts:Stem=Up,Muted,HideRest|Dur2:4th|Pos2:0
|Bar
!NoteWorthyComposer-End