Sorry for bringing an old thread back to life but it's relevant to me and I can't get it to work.
I'd like to allow a site content author (or role admin) or basically some other role other than a full blown Administrator to be able to create new users. Currently I have to tell the site admin to log out, create the new account, then log out and log back in as an admin and then go set the roles and permissions for that new user. It's a little confusing and a small hassle, it would be easier if the site admin could create new users without having to log out. But as mentioned, I don't want to give site content authors full admin permissions (as they'll break stuff).
I've tried these options in the user.config with no luck:
<add key="RolesThatCanManageUsers" value="Role Admins;" />
<add key="RolesThatCanManageUsers" value="Role Admins" />
<add key="RolesThatCanManageUsers" value="Role Administrators;" />
<add key="RolesThatCanManageUsers" value="Role Administrators" />
Not the end of the world if this feature is no longer available, but if it is I'd like to use it. Thanks!