Where to access my created Agent?

On the Home page of my site, I clicked "New" and created an Agent.  The side pane popped up as expected.  I used it and closed the pane.

Later on, returning to SharePoint, I wanted to access the Agent again, but could not find a button anywhere to light up the pane again.  I ended up going to the Site Assets, found it there and opened the pane...

I then tried to add a link to the Local Navigation bar (Communications site). I was able to add the link, but it did not open the pane; it opened up a separate full-page appearance (not a new tab in the browser).

I did click the Copilot button at the top-right of my browser but that opened the general Copilot pane, not the SharePoint Agent pane.

But what a pane! (sorry)  What is an elegant way to reopen the SharePoint Agent pane?  I'm sure the answer is simple, but as is typical with computers,
almost everything is easy but almost nothing is intuitive.

Thank you.