2 methods. I usually use the method in measure 1 since it can use default stem lengths. I have a tool to automatically insert the mutes.
!NoteWorthyComposer(2.51)
|SongInfo|Title:"SATB Template"|Copyright1:"Copyright © <Year> by <Name>"
|PgSetup|StaffSize:18|PageNumbers:1|BarNumbers:Plain
|AddStaff|Name:"Soprano"
|StaffProperties|EndingBar:Open (hidden)|WithNextStaff:Bracket,ConnectBars,Layer
|Clef|Type:Treble
|Key|Signature:C|Tonic:C
|TimeSig|Signature:2/4
|Rest|Dur:8th
|Note|Dur:Whole,Grace|Pos:-3x^|Opts:Muted|Visibility:Never
|Chord|Dur:8th|Pos:-3,-1
|Note|Dur:Whole,Grace|Pos:-3x^|Opts:Muted|Visibility:Never
|Chord|Dur:8th|Pos:-3,-1|Opts:Stem=Up,Beam=First
|Note|Dur:Whole,Grace|Pos:-3x^|Opts:Muted|Visibility:Never
|Chord|Dur:8th|Pos:-3,-1|Opts:Stem=Up,Beam=End
|Bar
|Rest|Dur:8th
|Note|Dur:8th|Pos:-1|Opts:StemLength=0
|Note|Dur:8th|Pos:-1|Opts:Stem=Up,StemLength=0,Beam=First
|Note|Dur:8th|Pos:-1|Opts:Stem=Up,StemLength=0,Beam=End
|Bar
|AddStaff|Name:"Alto"
|StaffProperties|EndingBar:Open (hidden)|WithNextStaff:Bracket,ConnectBars
|Clef|Type:Treble
|Key|Signature:C|Tonic:C
|TimeSig|Signature:2/4
|Rest|Dur:8th
|Note|Dur:8th|Pos:-3|Visibility:Never
|Note|Dur:8th|Pos:-3|Visibility:Never
|Note|Dur:8th|Pos:-3|Visibility:Never
|Bar
|Rest|Dur:8th
|Note|Dur:8th|Pos:-3|Opts:StemLength=9
|Note|Dur:8th|Pos:-3|Opts:Stem=Up,StemLength=9,Beam=First
|Note|Dur:8th|Pos:-3|Opts:Stem=Up,StemLength=9,Beam=End
|Bar
!NoteWorthyComposer-End