can you lock a power point presentation

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1. How to Lock a PowerPoint Presentation

   

2. How to Lock a PowerPoint Presentation

   

3. an orange lock and key on a white background with space for your text or image

   

4. How to Lock Objects in PowerPoint? (Step-by-Step Guide)

   

5. How to Lock Objects in PowerPoint? (Step-by-Step Guide)

   

6. How to Lock PowerPoint 2016 Presentation from Opening/Editing