Hi there,
If you would like to disable Autoplay for every slide, then, if it is Captivate 7, you can set the action on enter of the slide or on exit of the slide to pause that slide, (under properties of that slide).
If it is any other version of Captivate, then you can either insert a button on every slide with pause after, that will pause the slide or apply standard action on the enter or exit use cpCmdPause with value 1.
Thanks.