The page you link describes "vanguards" which apply the guard logic to positions beyond the first hop. They are only available as a plug-in that you must separa

The page you link describes "vanguards" which apply the guard logic to positions beyond the first hop. They are only available as a plug-in that you must separately download and configure. My understanding is that no plans currently exist to integrate vanguards into Tor due to cost of engineering challenges that appear if everybody were to use them (including especially how they would affect load balancing).