Click the bottom note of the chord.
The Articulation Selection dialog box appears. If the rolled chord marking
appears in the palette, double-click it; the marking appears in the score.
If not:
Click Create. The Articulation Designer
appears.
Click Main. The Symbol Selection dialog
box appears.
Double-click the symbol (#103).
If you have trouble finding it, scroll
to slot 103 and click the symbol. Click OK.
Select Copy the Main Symbol. This command
lets you to stretch the marking as long as necessary. Make sure Vertically
is selected in the drop-down menu.