The document provides instructions for trainers on how to remove closed captions from videos in a PowerPoint presentation. It explains that an add-in called STAMP must be installed to remove captions. Once installed, trainers can locate a slide with a video, click the video, select the "Playback" tab, and click "Hide" to turn off captions for that slide. Captions can be hidden or shown for all slides by repeating the process on each slide.