Share your presentation
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                      On the ribbon, select Share. If your presentation isn't already saved to OneDrive, you'll be prompted to save it there. 
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                      In the Send Link dialog box, do the following: - 
                          Enter the names or email addresses of the people you want to share with. 
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                          Select the drop-down to change permissions, if you want. Allow editing is checked by default. To change permission to view only, uncheck this box and select Apply. 
 
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                      Include a message if you'd like and select Send. 
You can also select Get a link to create a link that you can copy into an email.
Co-author a presentation
After you share your file, you can work together at the same time.
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                      Under Share, see who is also working in the file. 
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                      Colored flags show where each person is editing. 
Comments in presentations
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                      Select Review >Â Comment or @ Mention. Or select New if the Comments pane is open. 
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                      In the Comments pane, type your comment in the box, @mention a collaborator if you like, and press Enter. 
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                      Select Reply and type your response. 
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                      Select See more comments to go between comments and slides. 
                     
 
                         
				 
				