Just two ways: volume (or expression) MPC or (perhaps) custom volume change.
!NoteWorthyComposer(2.751)
|Editor|ActiveStaff:1|CaretIndex:1|CaretPos:-4
|SongInfo|Title:""|Author:""|Lyricist:""|Copyright1:""|Copyright2:""
|PgSetup|StaffSize:16|Zoom:4|TitlePage:Y|JustifyVertically:Y|PrintSystemSepMark:N|ExtendLastSystem:N|DurationPadding:Y|PageNumbers:0|StaffLabels:None|BarNumbers:Plain|StartingBar:1
|Font|Style:StaffItalic|Typeface:"Times New Roman"|Size:10|Bold:Y|Italic:Y|CharSet:0
|Font|Style:StaffBold|Typeface:"Times New Roman"|Size:8|Bold:Y|Italic:N|CharSet:0
|Font|Style:StaffLyric|Typeface:"Times New Roman"|Size:7|Bold:N|Italic:N|CharSet:0
|Font|Style:PageTitleText|Typeface:"Times New Roman"|Size:24|Bold:Y|Italic:N|CharSet:0
|Font|Style:PageText|Typeface:"Times New Roman"|Size:12|Bold:N|Italic:N|CharSet:0
|Font|Style:PageSmallText|Typeface:"Times New Roman"|Size:8|Bold:N|Italic:N|CharSet:0
|Font|Style:User1|Typeface:"MusikDingsSans"|Size:18|Bold:N|Italic:N|CharSet:0
|Font|Style:User2|Typeface:"Times New Roman"|Size:8|Bold:N|Italic:N|CharSet:0
|Font|Style:User3|Typeface:"Times New Roman"|Size:8|Bold:N|Italic:N|CharSet:0
|Font|Style:User4|Typeface:"Times New Roman"|Size:8|Bold:N|Italic:N|CharSet:0
|Font|Style:User5|Typeface:"Times New Roman"|Size:8|Bold:N|Italic:N|CharSet:0
|Font|Style:User6|Typeface:"Times New Roman"|Size:8|Bold:N|Italic:N|CharSet:0
|PgMargins|Left:1.27|Top:1.27|Right:1.27|Bottom:2.00|Mirror:N
|AddStaff|Name:"Staff"|Group:"Standard"
|StaffProperties|EndingBar:Open (hidden)|Visible:Y|BoundaryTop:12|BoundaryBottom:12|Lines:5|Color:Default
|StaffProperties|Muted:N|Volume:127|StereoPan:64|Device:0|Channel:1
|StaffInstrument|Name:"Trombone"|Patch:57|Trans:0|DynVel:10,30,45,60,75,92,108,127
|Clef|Type:Treble
|Key|Signature:C|Tonic:C
|TimeSig|Signature:4/4
|Dynamic|Style:f|Opts:Volume=127|Pos:-8|Wide:Y
|Note|Dur:Half|Pos:0|Opts:Diminuendo
|Dynamic|Style:pp|Opts:Volume=10|Pos:-8|Wide:Y|Visibility:Never
|Rest|Dur:Half
|Bar
|Dynamic|Style:f|Opts:Volume=127|Pos:-8|Wide:Y
|Dynamic|Style:p|Opts:Velocity=92,Volume=127|Pos:-8|Placement:BestFitForward
|DynamicVariance|Style:Decrescendo|Pos:-13|Visibility:Never
|Note|Dur:Half|Pos:-2
|Dynamic|Style:p|Opts:Volume=30|Pos:-8|Wide:Y|Visibility:Never
|Rest|Dur:Half
|Bar
|Dynamic|Style:p|Opts:Velocity=108,Volume=30|Pos:-8|Wide:Y|Visibility:Never
|Note|Dur:Whole|Pos:-4|Opts:Crescendo
|Dynamic|Style:ff|Opts:Volume=127|Pos:-8|Wide:Y
|Bar
|MPC|Controller:vol|Style:Linear Sweep|TimeRes:Quarter|SweepRes:1|Pt1:0,36|Pt2:1,127|Pos:8|Wide:Y
|Note|Dur:4th|Pos:0|Opts:Crescendo
|MPC|Controller:vol|Style:Linear Sweep|TimeRes:Quarter|SweepRes:1|Pt1:0,127|Pt2:1,43|Pos:8|Wide:Y
|Note|Dur:Half|Pos:-1|Opts:Diminuendo
|MPC|Controller:vol|Style:Linear Sweep|TimeRes:Eighth|SweepRes:1|Pt1:0,60|Pt2:1,127|Pos:8|Wide:Y
|DynamicVariance|Style:Sforzando|Pos:-8.5
|Note|Dur:4th|Pos:-3
|Bar
|MPC|Controller:vol|Style:Linear Sweep|TimeRes:Eighth|SweepRes:1|Pt1:0,60|Pt2:1,127|Pt3:7,17|Pos:8|Wide:Y
|DynamicVariance|Style:Sforzando|Pos:-9.5|Wide:Y
|Note|Dur:Whole|Pos:-5|Opts:Diminuendo
|Bar|Style:SectionClose|SysBreak:Y
!NoteWorthyComposer-End