After you have joined the stick with the small bell together use them on the box on the desk that you had to unlock to get the codes. I believe it activates the cookoo clock.
If you get stuck on the times for the clocks to be set at remember that the soldier clock and the cookoo clock are always set to midnight. The alarm clock is set to whatever time is shown on the smaller face that is on the alarm clock its self. Make sure that you set the clocks in the order that the code shows on the paper.
Edited on 10/02/2009 at 10:18:30 PM PST