You'll first enter some scores in Shooter mode.

Click Enter Scores on the toolbar.  Notice that if you 'hover' your mouse over the button, it informs you that you can also hold the Alt key and press F10 to begin entering scores.

 

 

Then select the match you created.

NOTE:  In situations like this, where the software is only showing one match, it seems a little silly to have to select it.  If you prefer, you can tick the check box in Program Preferences to avoid having to select when there's only one match on the list.