How to create System Field for auto generated URL in Wix?

I am trying to create a System field in my Wix website for generating URL for my dynamic page, which is similar to one of their preset "team".

As you can see in the picture above, the field "Team (Title)" is a System Field and it generates the URL for every new entry on its own and shown.

I am unable to figure out how to do this. If you can help me out, it would be a great help.

Thanks, Zeeshan