How to Turn on Closed Captioning in Captivate 17

HI,

This is my first time adding video to a Captivate 2017 course. The video was created in Vyond and I uploaded it with the help of Adobe so the entire 20 min video is on one slide.

Now, to turn on closed captioning so users with hearing impairment can read the script, do I need to enter the script (copy and paste from the Word doc) in the Slide Notes section and then fix the timing? Or, has Captivate already embedded the audio (and script) so all I need to do is turn on closed captioning so that the script will display when the course is published? If the latter, how and where do I do that?

Thanks.

Paul