How to assign an unattended runtime

I have an unattended runtime license that I want to assign to a machine. I watched a video tutorial in which the presenter opened the Edit Machine page and on that page there was a field in which he assigned the license, When I go to that page, however, I have no license fields, just machine name and machine key. Is this now done somewhere else? Any help would be appreciated.

Hello,

Can you attach screenshot?

Here is the screenshot what I see when the Edit machine window is opened.

I don’t have those license fields: