Click on "Customers".
Search for existing customers by entering the customer's name, address, or phone number.
Click "Go" or press Enter to view search results.
Click on the desired customer's Actions Menu (...).
Select "Attachments".
Click "Add Attachment".
Click on "Choose File" to locate and select the file that needs to be attached.
Enter a "Description" if desired.
When finished, click "Save".
