Choose some basic options for new member registration.
Allow new members to register → By enabling this option your visitors will be able to register by choosing Register now link on the front end. If you disable this you'll still be able to add new user in administration panel.
Choose group for members → Choose default group new members will be assigned to after they register.
Choose group for guest → Choose group unregistered visitors will have privileges of.
Display Terms of Service → If you need your users to accept Terms of Service you should enable this option and insert the text that will be displayed on registration page in textarea.
Featured author box displays random information about one of the site members.