Hi there
Sure, the button has a section that says "Active" and one that says "Inactive". Normally, the button pauses the slide halfway through its time period and it may be clicked to carry out its defined action at any point up to *and including* the pause point.
Sounds like you may not be having that experience? If so, how are you viewing? Preview? (If so, what method? In browser, play this slide, etc) or viewing the final output? If so, what exactly is the output? (SWF, MP4, etc)
Cheers... Rick