Navigate to Users
Only Username field is mandatory all other fields are optional. If Group is not selected to something else or if no other Groups are present, the Default group is always used Email is needed to enable email-based actions such as sending a user account invitation email on adding a new user or if the Admin desire to email a temporary password to the user in case of forgotten passwords.
Once the user is saved the Status shows Invited to indicate that an email with instructions to activate the user account has been sent. There is also an icon that will let the admin resend the invite at a later time if it has not been acted on.