Start by logging into your AP web interface.
Click Security > External RADIUS on the left. Configure with:
Click Save changes to flash at the top right.
Click SSID > SSID Management on the left. Underneath the current SSIDs, enter Guest WiFi (or whatever you wish) and click Create. Configure this new SSID with:
Next, scroll down the page and under Web Page Redirection Configuration, configure with:
Next, under WPR Whitelist Configuration, add the required domains one by one. Please refer to this list.
Next, under Authentication Service Configuration configure with:
Under Primary:
Under Secondary:
Under Primary (Accounting):
Under Secondary (Accounting):
Click Save changes to flash at the top right to commit your changes.
The configuration is now complete.