How do you add Breve Notes that should be rectangles rather the normal note head.

How do you add Breve Notes that should be rectangles rather the normal note head. This is in Engraving because technically this would be where you'd see the notes. The Widor No 5 has it in the last three chords and the biggest score to have these types of notation is the Hovland Tocatta on Now thank we all our God. I understood these to be be cluster or thump your fist hand to get lets say notes from A-F played all at once,