Closed captions provide text descriptions of the audio for audience members who cannot hear the audio (or hear it well). Once your presentation has been recorded, you can use the Caption Editor.
To use Caption Editor to add captions:
1. Navigate to your presentation. Click Edit Details and go to the Delivery tab.
2. Select the Audio Transcriptions check box and select the Captioning provided through the caption editor radio button.
3. Click Save.
Add captions using caption editor