Microsoft Office Documents:

1. Open the document in its respective Office application (Word, Excel, PowerPoint).

2. Go to File -> Info.

3. Click on Protect Document/Workbook/Presentation -> Encrypt with Password.

4. Enter a password, then re-enter it when prompted, and save the file.

PDF Files:

1. Open the PDF in Adobe Acrobat Reader.

2. Go to File -> Properties.

3. Click on the Security tab.

4. Under Security Method, select Password Security.

5. Set a password under Permissions and save the changes.

__________________________________________________________________________________________________

IMPORTANT:

Send the password to the recipient through a separate, secure communication channel (a phone call, or encrypted messaging app - RingCentral texts will work).