A PowerPoint presentation is useful in a lot of ways. A presentation has to be a good start and have a good introduction to any new idea or a product. When you start to do a presentation, you would have put in a lot of ideas and a lot of effort into the file. You would want to safeguard your creation and keep it off unwanted usage. So how to lock a PowerPoint presentation?
Locking your presentation means locking it from other users or unwanted users. You have to be careful and cautious when locking the presentation and remember the password for further reference. Thus let us look at how to lock a presentation.
After creating a presentation, you have to save it and open the presentation again.
Now,
Click File and select Save as
A window opens
Click Tools from the right side bottom of the window
Select General Options
A window opens
Type your password in Password to open and Password to modify.
These Passwords can be different from each other
Click OK
Another window opens
Reenter the Password to open
Click OK
Reenter Password to edit
Click Save

Now you have modified the document in a way that only you can edit or open it. This will enable you to safeguard your document from unwanted usages and editions.
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