Allowing Admins to Add New Users

On of my clients logged into their account and was trying to add new users. The only option is to add existing users. How can I give clients the ability to add new users. I prefer to have them go to “users” and have “add new” with “add existing”.

If there is another way, please let me know. I assume I am probably overlooking something from Network Admin.

As Always… Thanks,

Ken