Anyone can register for course

Hi

as described on https: : //premium.wpmudev.org/project/coursepress-pro/
There is an option in section 6 (enrollment and course cost)
that anyone can register for a course
I am just creating my first demo course and i dont have the option "anyone".
only manually add or the variations of registered user.
I would like for anyone to be able to register to the course even if they arent registered users.

thanks