Let's replace our boring Start new game button with a menu entry and a toolbar icon. First, select the button and press the Delete key to delete it. Then, locate Action Editor in the bottom-center part of the form editor and click on the New button on its toolbar. Enter the following values in the dialog (you can fill the Shortcut field by pressing the key combination you want to use):
Locate the toolbar in the central area (between the Type Here text and the first label) and drag the line containing the New Game action from the action editor to the toolbar, which results in a button appearing ...