How to access the localhost after doing "Remix"?

I’m giving a lecture+lab to ~20 people, and I wan’t them to go to my project, ‘Remix’ it to create their own copy, change one parameter, run it, and access the localhost to see what happen.

When I accessed the ‘localhost’ I used this url:
I found this url by clicking the “Share” button, but how can the people in my lab find this url if they don’t have user in glitch and they don’t see the ‘Share’ button ?
How can they connect their localhost? what is the url for them?


there’s a “Preview” button in the bottom bar that opens the URL for their project

Thank you !!