The procedure is standard for most Word, Excel etc.
- Open the document you would like to protect.
- Click the File menu, select the Info tab.
- Now select the Protect Document button. Click Encrypt with Password.
- Type your password then click OK. (hint – make sure you know if the CAPS lock is on)
- Type the password again to make sure you entered it properly
- click OK.
Each time you open the document, you will be prompted to enter your password to access its contents.