A User (User Account) is defined as anyone that has access to their Account through a combination of a username and password. This can be an individual email address but it can also a Group email address. Group email addresses are often used in case a team or group of people work through the same group email account. Maybe your inbound freight department, your Inside sales team, or you outbound freight team. This way a group of people can have access, but you will be seen and charged as 1 User.