Captivate 4 Pause Button Doesn't Work

On the properties dialog of a button, under the Options tab please make sure that the "Pause after:" check box is checked. Additionally, the time entered for this field should be comfortably less than the slide time so that the slide could be paused well before it ends.

For eg: if the slide duration is 3 seconds then I would advise you to have pause after time to say something like 1.5 second.