Allow new user registeration for a specific blog even after "Only registered users of this blog

I have a site created using Wordpress Network and I have enabled "Only registered users of this blogs can have access - anyone found under Users > All Users can have access. " for this site.

But I still want to allow new users to register for this site; the problem is that once "Only registered users of this blogs can have access - anyone found under Users > All Users can have access. " has been selected, even the registration page cannot be seen.

Is there a way to enable "Only registered users of this blogs can have access - anyone found under Users > All Users can have access. " for this site, while still allowing new users to see the registration page and allowing them to sign up for this site ?

Thanks!