PowerPoint for the web doesn't have a Track Changes feature. However, you can use the Comments feature to keep track of peer feedback in your presentation.
When you send your presentation out for review, give your reviewers these instructions to provide feedback to you:
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Select the item on the slide to add a comment about.
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On the Review tab, select
 New Comment. -
Enter your comments, and press Enter.Â
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To add more comments, in the Comments pane, select New, and type your text in the box.
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To reply to a comment, type your message in the @mention or reply field.Â
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A comment bubble
appears in the upper corner of the item you comment about on the slide. (Some items, like charts need to be selected to see the comment bubble.Â
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After your peers have reviewed your presentation, you'll want to read their comments in the Comments pane.
On the Review tab, SelectÂ