It is, but at some point you are going to need to control the Stem Length of the notes. If you use a split chord, you get the same Stem Length for each voice. I would suggest something like this:
!NoteWorthyComposer(2.751)
|AddStaff|Name:"Staff"
|StaffProperties|EndingBar:Open (hidden)|WithNextStaff:Layer
|Marker|Pos:-7|Target:Triplet|Visibility:Never
|Rest|Dur:8th,Triplet=First|Visibility:Never
|RestChord|Dur:4th,Triplet=End,Slur|Opts:Stem=Down,Slur=Upward,XNoteSpace=0.5,NoLegerLines,Muted,HideRest|Dur2:Whole|Pos2:7z
|Marker|Pos:9.5
|Note|Dur:4th,Slur|Pos:5|Opts:Stem=Up,StemLength=5.5
|Rest|Dur:4th,Slur|Opts:VertOffset=8
|Marker|Pos:9.5
|Note|Dur:4th,Slur|Pos:6|Opts:Stem=Up,StemLength=5.5
|Bar
|AddStaff|Name:"Staff-2"
|StaffProperties|EndingBar:Open (hidden)
|Marker|Pos:6|Target:Triplet
|Rest|Dur:8th,Triplet=First
|Chord|Dur:8th,Triplet|Pos:-2,1,3|Opts:Stem=Down,StemLength=5,Beam=First
|Marker|Pos:7|Target:Triplet
|Chord|Dur:8th,Triplet=End|Pos:-2,1,3|Opts:Stem=Down,StemLength=5,Beam=End
|Marker|Pos:6|Target:Triplet|Visibility:Never
|Chord|Dur:8th,Triplet=First|Pos:-2,1,3|Opts:Stem=Down,StemLength=5,Beam=First
|Chord|Dur:8th,Triplet|Pos:-2,1,3|Opts:Stem=Down,StemLength=5,Beam
|Chord|Dur:8th,Triplet=End|Pos:-2,1,3|Opts:Stem=Down,StemLength=5,Beam=End
|Marker|Pos:6|Target:Triplet|Visibility:Never
|Chord|Dur:8th,Triplet=First|Pos:-1,1,3|Opts:Stem=Down,StemLength=6,Beam=First
|Chord|Dur:8th,Triplet|Pos:-1,1,3|Opts:Stem=Down,StemLength=6,Beam
|Chord|Dur:8th,Triplet=End|Pos:-1,1,3|Opts:Stem=Down,StemLength=6,Beam=End
|Marker|Pos:6|Target:Triplet|Visibility:Never
|Chord|Dur:8th,Triplet=First|Pos:-1,1,3|Opts:Stem=Down,StemLength=6,Beam=First
|Chord|Dur:8th,Triplet|Pos:-1,1,3|Opts:Stem=Down,StemLength=6,Beam
|Chord|Dur:8th,Triplet=End|Pos:-1,1,3|Opts:Stem=Down,StemLength=6,Beam=End
|Bar
!NoteWorthyComposer-End