Adding new url subdomain setting has changed??

Hi!

Im making my second Multisite network and when im adding a new site the url is “before” in the options so its like this:

blablabla.com/[text_field]

instead of the last time I made a multisite network it was like this:

[text_field].blablabla.com/

I need to have an english translation of my website and the new URL should be

eng.blablabla.com/

But that will not work since the textfield is after the first “slash” someone know how to change this?

Thankful for any kind of support! 🙂