This is a way to put courtesy accidentals above or below the note and uses the font NWC already has installed, using Rick's example:
!NoteWorthyComposerClip(2.5,Single)
|Clef|Type:Treble
|Key|Signature:Bb,Eb,Ab|Tonic:C
|Note|Dur:32nd|Pos:1|Opts:Stem=Down,Beam=First
|Note|Dur:32nd|Pos:2|Opts:Stem=Down,Beam
|Note|Dur:32nd|Pos:1|Opts:Stem=Down,Beam=End
|Bar
|Note|Dur:Half|Pos:n0
|Rest|Dur:4th
|Bar
|Note|Dur:8th|Pos:n3|Opts:Stem=Down,Beam=First
|Note|Dur:8th|Pos:5|Opts:Stem=Down,Beam=End
|Note|Dur:8th|Pos:5|Opts:Stem=Down,Beam=First
|Note|Dur:8th|Pos:3|Opts:Stem=Down,Beam=End
|Text|Text:"f"|Font:StaffSymbols|Pos:6|Placement:AtNextNote
|Note|Dur:16th|Pos:0|Opts:Stem=Down,Beam=First
|Note|Dur:16th|Pos:5|Opts:Stem=Down,Beam
|Note|Dur:16th|Pos:3|Opts:Stem=Down,Beam
|Note|Dur:16th|Pos:0|Opts:Stem=Down,Beam=End
!NoteWorthyComposerClip-End