You can flesh out the length of the bar a bit too, by putting a hidden rest after each grace note. You need to use extra layered staffs to ensure the bar length. Watch for overlap when layered.
Anyway, try this
Make three staffs:
Top staff
!NoteWorthyComposerClip(2.0,Single)
|Clef|Type:Treble
|Key|Signature:F#
|Note|Dur:8th,Grace|Pos:-2|Opts:Stem=Up,Beam=First,Muted
|Note|Dur:8th,Grace|Pos:-1|Opts:Stem=Up,Beam=End,Muted
|Rest|Dur:4th|Visibility:Never
|Note|Dur:4th,Grace|Pos:-2^|Opts:Muted
|Rest|Dur:4th|Visibility:Never
|Note|Dur:4th,Grace|Pos:-2|Opts:Muted
|Rest|Dur:4th|Visibility:Never
|Note|Dur:8th,Grace|Pos:0|Opts:Stem=Down,Beam=First,Muted
|Note|Dur:8th,Grace|Pos:2|Opts:Stem=Down,Beam=End,Muted
|Rest|Dur:4th|Visibility:Never
|Bar
|Rest|Dur:Whole|Opts:Stem=Down|Visibility:Never
|Bar
!NoteWorthyComposerClip-End
The second staff is the first two bars of this clip.
!NoteWorthyComposerClip(2.0,Single)
|Clef|Type:Treble
|Key|Signature:F#
|Instrument|Name:"Alto Sax"|Patch:65|Trans:0|DynVel:10,30,45,60,75,92,108,127|Pos:8
|Note|Dur:8th|Pos:-2|Opts:Stem=Up,Beam=First|Visibility:Never
|Note|Dur:8th|Pos:-1|Opts:Stem=Up,Beam=End|Visibility:Never
|Note|Dur:Half|Pos:-2|Visibility:Never
|Instrument|Name:"Muted Trumpet"|Patch:59|Trans:0|DynVel:10,30,45,60,75,92,108,127|Pos:8
|Note|Dur:8th|Pos:0|Opts:Stem=Down,Beam=First|Visibility:Always
|Note|Dur:8th|Pos:2|Opts:Stem=Down,Beam=End|Visibility:Always
|Bar
|Note|Dur:8th|Pos:5|Opts:Stem=Down,Beam=First|Visibility:Always
|Note|Dur:8th|Pos:-1|Opts:Stem=Down,Beam=End|Visibility:Always
|Note|Dur:8th|Pos:-3|Opts:Stem=Up,Beam=First|Visibility:Always
|Note|Dur:8th|Pos:-4|Opts:Stem=Up,Beam=End
|Note|Dur:8th|Pos:-3
|Note|Dur:4th,Dotted|Pos:-2
|Bar
|Rest|Dur:4th|Opts:VertOffset=-5
|Rest|Dur:4th|Opts:VertOffset=-5
|Rest|Dur:4th|Opts:VertOffset=-5
|Rest|Dur:4th|Opts:VertOffset=-5
|Bar
|Rest|Dur:Whole
|Bar
!NoteWorthyComposerClip-End
The third staff is the last two bars of the second clip.
Layer and preview. (I can't preview it just now, but it seemed to work a step or two ago.)