Normally, Finale adds slashes only to flagged 
 (unbeamed) grace notes. It’s possible, however, to add slashes to beamed 
 grace notes.
        
        
            - Click the Expression tool   ; then click the grace 
 note. The Expression Selection dialog box appears. ; then click the grace 
 note. The Expression Selection dialog box appears.
- Choose the Miscellaneous category > Create Misc. Expression. The Expression Designer dialog box appears. 
- Click Shape, then Create. You are now in the Shape 
 Designer. The following instructions give measurements in points (1/72 
 inch). If you’ve been working in different units, choose Rulers and Grid 
 from the Shape Designer menu and select Points. Also choose “.5 pt” from 
 the Line Thickness submenu of the Shape Designer menu. Because you’re 
 making a very small shape, choose 400% from the View pop-up menu to magnify 
 your work area.
- Click the origin (the small white circle); 
 drag upward and to the right, until the H: and V: text boxes both say 
 6.
- COMMAND-click 
 the OK button (or press return five times). 
 You can now adjust the slash by dragging its handle.