I recently had 16th triplets with the violin rolling on three strings. When one of these sets included a fingered A on the D string as well as an open A string, I layered the 2nd note with a stem in the other direction. Not wanting to show the 3 more than once, I had to send one of the hidden rests to the boondocks.
!NoteWorthyComposerClip(2.5,Single)
|Note|Dur:16th,Triplet=First,Slur|Pos:-5|Opts:Stem=Up,Beam=First
|Note|Dur:16th,Triplet,Slur|Pos:-1|Opts:Stem=Up,Beam
|Note|Dur:16th,Triplet=End|Pos:4|Opts:Stem=Up,Beam
|Note|Dur:16th,Triplet=First,Slur|Pos:4|Opts:Stem=Up,Beam
|Note|Dur:16th,Triplet,Slur|Pos:-1|Opts:Stem=Up,Beam
|Note|Dur:16th,Triplet=End|Pos:-5|Opts:Stem=Up,Beam=End
|Text|Text:"4"|Font:PageText|Pos:-8|Placement:AtNextNote
|Note|Dur:16th,Triplet=First,Slur|Pos:-5|Opts:Stem=Up,Beam=First
|Note|Dur:16th,Triplet,Slur|Pos:-3|Opts:Stem=Up,Beam
|Note|Dur:16th,Triplet=End|Pos:0|Opts:Stem=Up,Beam
|Note|Dur:16th,Triplet=First,Slur|Pos:0|Opts:Stem=Up,Beam
|Note|Dur:16th,Triplet,Slur|Pos:-3|Opts:Stem=Up,Beam
|Note|Dur:16th,Triplet=End|Pos:-5|Opts:Stem=Up,Beam=End
|Note|Dur:16th,Triplet=First,Slur|Pos:-6|Opts:Stem=Up,Beam=First
|Note|Dur:16th,Triplet,Slur|Pos:-4|Opts:Stem=Up,Beam
|Note|Dur:16th,Triplet=End|Pos:0|Opts:Stem=Up,Beam
|Note|Dur:16th,Triplet=First,Slur|Pos:0|Opts:Stem=Up,Beam
|Note|Dur:16th,Triplet,Slur|Pos:-4|Opts:Stem=Up,Beam
|Note|Dur:16th,Triplet=End|Pos:-6|Opts:Stem=Up,Beam=End
|Text|Text:"3"|Font:PageText|Pos:13|Placement:AtNextNote
|Note|Dur:16th,Triplet=First,Slur|Pos:-6|Opts:Stem=Up,Beam=First
|Text|Text:"4"|Font:PageText|Pos:13|Placement:AtNextNote
|Rest|Dur:16th,Triplet,Slur|Visibility:Never
|Text|Text:"O"|Font:PageText|Pos:13|Placement:AtNextNote
|Note|Dur:16th,Triplet=End,Staccato|Pos:-1|Opts:Stem=Up,Beam
|Note|Dur:16th,Triplet=First,Staccato,Slur|Pos:-1|Opts:Stem=Up,Beam
|Rest|Dur:16th,Triplet,Slur|Opts:VertOffset=-1|Visibility:Never
|Note|Dur:16th,Triplet=End|Pos:-6|Opts:Stem=Up,Beam=End
!NoteWorthyComposerClip-End
And on the layered staff:
!NoteWorthyComposerClip(2.5,Single)
|Rest|Dur:Half,Dotted|Visibility:Never
|Rest|Dur:16th,Triplet=First|Opts:Stem=Down,VertOffset=-180|Visibility:Never
|Note|Dur:16th,Triplet|Pos:-1|Opts:Stem=Down
|Rest|Dur:16th,Triplet=End|Opts:Stem=Down|Visibility:Never
|Rest|Dur:16th,Triplet=First|Opts:Stem=Down,VertOffset=-180|Visibility:Never
|Note|Dur:16th,Triplet|Pos:-1|Opts:Stem=Down
|Rest|Dur:16th,Triplet=End|Opts:Stem=Down|Visibility:Never
!NoteWorthyComposerClip-End