To add new users to your WordPress website/blog;
- Login to the site with your administrator username and password.
- Select either Users > Add New on the left navigation menu OR New > User at the top.
- Enter the user details
- Select an appropriate user role.
- Click Add New User
You may also add users by visiting the login page and selecting the Register link. Please note that you will still be required to login as an administrator and change their user roles to an appropriate one, else, they will be restricted to the default (Subscriber by default) level.
NOTE: If not changed, WordPress' login page is located at www.yourwordpresssiteurl.com/wp-login.php.