If the company you are joining already exists, you will need to request an invitation from an administrator.
You will receive an email prompting you to accept the invitation. Simply click the Accept button and you will be redirected to the registration page. Fill out the required fields and accept the terms and conditions, once complete, click on Submit. You will then be redirected to the login page where you can enter the website using your details provided during registration.
Watch the following video on how to register a device to your account.