1. Open your OneDrive folder (double click on the taskbar icon, or open it from "This PC".
2. Right click on the document you would like to share, and click on "Share"
3. Click on "Anyone with the link can edit"
4. Enter the date you would like the document to expire in the box marked "Set Expiration Date", then click "Apply"
5. You can then send the document by either entering the recipient's name in the name marked "To: Name, group or email" then clicking "Send", or by clicking "Copy Link" and sending that link to the recipient directly.