When you registered in the system, the primary contact email you received also contained a “Registration key” (8 characters long containing numbers and letters).

Other members of your organization may use this key to register themselves. If the site you are registering in has a "Registration Key" option, they should use this option to register. They will not be required to complete a full registration form - just information about themselves (Name, phone and email address)

Once they have completed the process, the primary contact from your organization will need to approve their account. Once the account is approved, an email containing their login ID and password will be sent immediately.