Trying to configure Radius or AD VPN with Core

Story : After testing the VPN with two users, it’s time to expand for more.

In the manual, that can be found here : https://download.peplink.com/manual/peplink-balance-and-mediafast-firmware-manual-8.0.2.pdf

On page 171, section 14.1.2 Authentication Methods:

There are details on how to authenticate with Radius or AD, but I just can’t find this section.
I refreshed the Remote User Accounts page, but nothing. Do we need to reboot?

Should I put this in the bugs section?

Any help would be apreciated. Thanks.