... I tried the hidden grace rest, but this creates, for me, a bad problem. When I start my staffs as follows ...
!NoteWorthyComposerClip(2.75,Single)
|Clef|Type:Treble
|Key|Signature:F#,C#,G#,D#|Tonic:E
|User|PageTxtMaestro.nw|Pos:0|Class:StaffSig|Visibility:TopStaff
|Boundary|Style:NewSize|Upper:25|Lower:6|Visibility:TopStaff
|Rest|Dur:8th,Grace
|Boundary|Style:Reset|Visibility:TopStaff
|User|PageTxt.nw|Pos:0|PgStyle:Title|Text:%Title%|Fnt:PageTitleText|YLoc:Top|XLoc:Center|PgCtrl:Once
|User|PageTxt.nw|Pos:0|PgStyle:Author|Text:%Author%|Fnt:PageText|YLoc:Top|XLoc:Right|CY:10|PgCtrl:Once
|User|PageTxt.nw|Pos:0|PgStyle:Lyricist|Text:%Lyricist%|Fnt:PageText|YLoc:Top|CY:10|XLoc:Left|PgCtrl:Once
|User|PageTxt.nw|Pos:0|PgStyle:Copyright|Text:%Copyright1%%br%%Copyright2%|Fnt:PageSmallText|YLoc:Bottom|XLoc:Center|Visibility:TopStaff
|User|Acciaccatura.ms|Pos:0|Class:StaffSig
|TimeSig|Signature:3/8
|PerformanceStyle|Style:Legato|Pos:7.5
|Rest|Dur:Whole
|Bar
!NoteWorthyComposerClip-End
... then that first whole rest does not come out as a 3/8 rest, but as a 4/4 rest!  ... Do you put some things (clefs, time signature, key, objects) at other places to circumvent this?
 ... Do you put some things (clefs, time signature, key, objects) at other places to circumvent this?
Harald