Storyline 3 No Caption Edit Feature

I am working in Storyline 3 and after uploading a caption file for audio, I cannot edit the captions. There is no edit button or feature. I do not see a Caption Editor as in the how-to articles. after selecting  Audio Tools > Options my choices are replace, remove or export captions. Storyline 3 CC documentation shows a Closed Captions Editor that does not appear for me. What's up?

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