Password Protection

• 1). Click the "Review" tab on the PowerPoint presentation that you want to lock.
  
  
• 2). Click "Passwords" in the "Protection" area. Choose "Encrypt this presentation and require a password to open" or "Require a password to modify this presentation."
  
  
• 3). Type the password in the "New Password" box, then retype the password in the "Verify" box and click "Set Password." Click "OK" and then click "Save." Note that the password is not stored anywhere but in your presentation file. If you lose the password, you will not be able to recover it or open the file.
  
  

Information Rights Management

• 1). Click the "Review" tab in the presentation you want to restrict, and then click "Permissions" and "Restricted Access."
  
  
• 2). Enter your username and password for the licensing server. Check with your company's IT manager to find your username and password.
  
  
• 3). Type the email addresses of the people who will have read-only access in the box next to "Read." Enter the email addresses of those who can edit the document in the "Change" box and give full permission to people in the "Full Control" box. Click "OK" to set the permissions.
  
  
• 4). Click "Permissions" in the "Review" tab and then choose "Restricted Access." Click "More Options" and choose from the additional permission restriction options. For example, set an expiration date for the file beyond which people won't be able to open or edit it. Click "OK" to save the permissions.
  
  

Read Only

• 1). Locate your PowerPoint presentation in the Mac OS X Finder application.
  
  
• 2). Click the "Action" menu, which looks like a gear with a down arrow next to it. Select "Get Info."
  
  
• 3). Put a check in the box next to "Locked" to mark the PowerPoint file as read-only within OS X. Close the Action dialog box.