To display a delimiter in the drop-down menu, complete the following steps:

1. Right-click a command from an existing drop-down menu and select Append Item from its context menu.
2. A new command will appear. In the New Command's Link to Command to Command designer, delete the name in the Name textbox. In the Text textbox change the name to a hyphen. The input value for the Text textbox and Name textbox fields should appear like the Link to Command designer shown below.
   
3. Select OK and your command link will appear as a delimiter like the one shown below.