Install agent, at the bottom. Copy install link is the page. The command above it is what runs on the machine.
Open Install agent. The command is the long address on this hub, with /windows.ps1 or the script for the platform you picked. A short name cannot host that script. It only opens the page.
The install page is the box under the command. Copy install link is what you send. On this hub that address is the short page, behub.app/ec-ka1g. The person opens it in a browser, picks their platform, and copies the command from there. Open shows you the same page. They do not need a sign-in. The page also has agent.json, which is why the enrollment token is not pasted into this console.
The line you paste on the machine is Install the agent on a machine. Replacing the link, so the old page stops installing, is Rotate the install link. A customer's own page, tagged into their group, is Give a customer their own install link.