Need help on Learning Interaction Template

How do I find the place to modify the definitions that go with the phrases in the Learning Interaction template called Word and Phrase Button Layout?  I see the phrases in the timeline, but, I don’t see the definitions so I can change them to match with the words. I have watched a lot of videos, but, I have not found one that works like this.  I am using Captivate 2019. Thank you