To set a password to open a document, follow the steps below:
1.Open the document you want to protect with a password.
2.On the Protection tab, click
Set password.
3.In the Set password window that appears, enter a password for the document and confirm it.
4.Click OK.
Once the verification is successfully completed, you will see a notification confirming the entered passwords match. Save the document to confirm the changes.
Next time the document is opened, you will be requested to enter a password prior to displaying the document content.