How to Protect Particular Slides in PowerPoint Presentations in C#?

  1. I want to protect/unprotect particular slides so that without authentication no one can do change in it.

  2. Is there any way to save particular slides in ppt(partial save)?

@Jayshiv,
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@Jayshiv,
Unfortunately, I did not find this option in PowerPoint documents. If you can make a presentation in PowerPoint manually with individual slide security that requires authentication, please share a sample.