What is the difference between an absolute-user and a sub-user?
An absolute-user has the admin rights on the entire account created for a company. This user can create / delete / manage sub-users, edit account settings, monitor account usage, assign various permissions to sub-users, subscribe to new services, and renew existing subscriptions. This user can also post jobs, manage responses through application management. A sub-user can post jobs, manage responses through application management and change his sub-user password.