How to display external inks in CoPilot agent

Hi

As a rank amateur I am trying to develop a co-pilot agent that will displays links to reference documents that contain more information than then co-pilot knowledge answer. All the docs are held in various SharePoint sites

However I try to insert links in the Knowledge document, it will not display in Co-pilot agent. I have tried Inline hyperlinks, full raw URL’s and trying to create a heading for references and inserting them there but nothing seems to make them appear in the agent.

Can anyone help before I remove what’s left of my fast receding hairline

thx