Forticlient Webfilter Extension (Microsoft Edge)

In EMS I have Enabled the Web Browser Plug-in for Web Filtering.  Once enabled, all of the clients begin prompting:

Please install and enable FortiClient WebFilter Extension in "Microsoft Edge"

However, there is no FortiClient WebFilter extension available in the Microsoft Edge Extension Store that I can find.  Where do I get the FortiClient WebFilter Extension for Edge?  I've tried installing the one available in the Chrome store (through Edge), but it doesn't work, and I continue to receive prompts to install and enable it.

Thanks!