Where it is: Settings → AI Behavior → Website guide.
With Website guide on, answers can link to the page they came from, and the bot can point people to your contact, services or product pages using your real navigation menu.
Why it cannot invent links
The bot only ever receives the URLs of the pages behind an answer plus your menu. It has no ability to construct a URL, which is what stops the classic failure of a confident link to a page that does not exist.
This is the difference between “yes, we do that” and “yes, we do that — here is the page about it”. It measurably increases the number of conversations that end somewhere.