Limiting search to specific websites
Restrict Rhazes web results to sites you trust, such as your guidelines body, and add those domains without leaving the chat.
Updated
Turning it on
Open Sources beside the message box and switch on Search specific websites only. Web searches are then limited to the sites on your list, and the count of them shows beside the setting.
Adding sites
With the setting on, select Edit to open your list, type a domain such as nice.org.uk, and choose Add site. You can do this from the chat itself, so adding a source you have just realised you need does not mean a trip to settings.
The first few sites show as chips under the setting, with the rest folded behind a count.
The switch on its own does nothing until there is at least one site on the list. If you turn it on and searches carry on as before, an empty list is why.
When to use it
This is worth switching on when you know the answer should come from particular places, for example the guidelines body you work to. Leave it off for general questions, where restricting the search too early can hide the better answer.
Your list is also editable under Settings → Sources. See Account & settings.