How to Enable Endnote 21 in Word MacBook Air M1? To enable EndNote 21 in Microsoft Word on a MacBook Air with an M1 chip, follow these steps: First, ensure that both EndNote 21 and Microsoft Word are installed and updated to the latest versions. Open EndNote 21 and go to EndNote > Customizer from the top menu bar. Check the box for Cite While You Write (CWYW) and click Next to install the plugin.