Make your clock event show the picture you want.
Use a conditional branch. Something like if a button is being pressed. If it is, rotate the clock hand picture. You'll want to make sure that the image for the clock hand has the piece that puts it at the middle of the clock in the center of the image, or it'll look weird. then, if there is no button being pressed, then move the picture nowhere at 1 frame do not wait, then put break loop. Put the conditional branch and all of it's contents in a loop. That should work.