When completed, AlarmClockView has the following user
interface:

To define this user interface, first, add two push buttons to the empty window in the Composition Editor:
(Buttons category) and
(Push Button part) from the parts palette. After you select them, the
status line along the bottom of the editor shows:
Category: Buttons Part: Push Button

(the Selection tool) on the Tool bar to disarm the Sticky.
Next, add the other parts. You'll need:
category,
part
category,
part
category,
part
After you add the parts, the window resembles:
