When I click this option, there is a field for "Connect URI"

and a greyed hint saying

bunker://?relay=wss://relay.example.co

and then the explanation "A bunker connect URI"

I want to create a tutorial so people can use this feature, but even I don't know how this works myself. Can you please teach me the step by step? Then I will gladly share the information. I believe today noStrudel is the best Nostr client.