How to add a white list of sites that do not require authentication in kerio control?

Question

Kerio

Good to everyone! There is a firewall and a router on Kerio Control 8.6.2, the settings indicate:
1) Always require user authentication when accessing web pages;
2) Enable non-transparent proxy server forced authentication;
3) A content filtering rule has been created: allow access to *yandex.ru* with add. not require authentication.

When accessing yandex.ru, it persistently requires authentication. Question: how to still allow access to some resources, despite the authentication requirement? It is necessary for some applications where the authentication mechanism in the proxy does not work properly, for example, some 1ski configurations.
PS.
I would be very grateful if someone would throw a video course on working with Kerio, which goes further than installing and configuring a simple filter. Preferably with analysis of troubleshooting cases a la "and I have permissive rules for dropping traffic, where to look."