Add new users WordPress Multisite without inviting them.

Hello,

I got a question regarding inviting new users to several multisite’s without actually inviting them.

I recently updated WordPress from an old version (3.x) to 4.5 and since then I noticed something has changed in the ‘add users’ screen. It used to be like this:

https://cdn.wpbeginner.com/wp-content/uploads/2014/11/add-new-user-wordpress.png

But now it looks like this:

https://prnt.sc/b0uodv

I was searching the internet and saw somebody write about allowing people to register to the website in default settings of the website. Now because of the fact it’s a Multisite, I don’t see that option in Settings. So I started to look at the settings of the network, where I also can’t find the setting to disable user registration, except by admins. I only found a option where I could ‘grant’ admins to add new users, which I obviously turned on and off with no result.

Is there something else I could try?

Thanks in advance.