Hi,
I'm not sure if this is exactly what you wanted, but it can reduce a little more the space between the "half note" and the "dotted quarter". As I didn't see the original sheet music I don't know if this is the correct position of both "dotted chord" and "half" (in your clip the half if before the chord...) but take a look at the clip.
Of course I don't know if it will work in conjunction with your complete work and, unfortunately, this makes an annoying space after the clef... sorry, it's not perfect... but I hope it will help you a little.
!NoteWorthyComposer(2.75)
|AddStaff|Name:"Staff"|Group:"Standard"
|StaffProperties|EndingBar:Section Close|Visible:Y|BoundaryTop:12|BoundaryBottom:12|Lines:5|WithNextStaff:Layer|Color:Default
|StaffProperties|Muted:N|Volume:127|StereoPan:64|Device:0|Channel:1
|StaffInstrument|Trans:0|DynVel:10,30,45,60,75,92,108,127
|Clef|Type:Treble
|Note|Dur:64th|Pos:3^|Opts:StemLength=0,NoLegerLines,ArticulationsOnStem|Visibility:Never
|Note|Dur:Half|Pos:3|Opts:Stem=Up
|Rest|Dur:64th|Visibility:Never
|Rest|Dur:32nd|Opts:Stem=Up|Visibility:Never
|Rest|Dur:16th|Opts:Stem=Up|Visibility:Never
|Rest|Dur:8th|Opts:Stem=Up|Visibility:Never
|Rest|Dur:4th|Opts:Stem=Up|Visibility:Never
|AddStaff|Name:"Staff-2"|Group:"Standard"
|StaffProperties|EndingBar:Section Close|Visible:Y|BoundaryTop:12|BoundaryBottom:12|Lines:5|Color:Default
|StaffProperties|Muted:N|Volume:127|StereoPan:64|Device:0|Channel:1
|StaffInstrument|Trans:0|DynVel:10,30,45,60,75,92,108,127
|Clef|Type:Treble
|Chord|Dur:4th,Dotted|Pos:0,7|Opts:Stem=Down,XNoteSpace=1
|Chord|Dur:8th|Pos:-1,6|Opts:Stem=Down
|Chord|Dur:4th|Pos:1,2,5|Opts:Stem=Down
|Chord|Dur:4th|Pos:1,2,6|Opts:Stem=Down
|AddStaff|Name:"Staff-1"|Group:"Standard"
|StaffProperties|EndingBar:Section Close|Visible:Y|BoundaryTop:10|BoundaryBottom:10|Lines:5|WithNextStaff:Layer|Color:Default
|StaffProperties|Muted:Y|Volume:127|StereoPan:64|Device:0|Channel:2
|StaffInstrument|Trans:0|DynVel:10,30,45,60,75,92,108,127
|Clef|Type:Treble
|Note|Dur:Half|Pos:3|Opts:Stem=Up,XNoteSpace=2
|Rest|Dur:Half|Opts:Stem=Up|Visibility:Never
|AddStaff|Name:"Staff-3"|Group:"Standard"
|StaffProperties|EndingBar:Section Close|Visible:Y|BoundaryTop:10|BoundaryBottom:10|Lines:5|Color:Default
|StaffProperties|Muted:Y|Volume:127|StereoPan:64|Device:0|Channel:3
|StaffInstrument|Trans:0|DynVel:10,30,45,60,75,92,108,127
|Clef|Type:Treble
|Chord|Dur:4th,Dotted|Pos:0,7|Opts:Stem=Down,XNoteSpace=1
|Chord|Dur:8th|Pos:-1,6|Opts:Stem=Down
|Chord|Dur:4th|Pos:1,2,5|Opts:Stem=Down
|Chord|Dur:4th|Pos:1,2,6|Opts:Stem=Down
!NoteWorthyComposer-End