An account owner is a registered person who created an account. They can apply for Partner status, access the Partner Portal and Practice staff, invite users and assign their roles, send out invitations to certifications, add new/delete/retire Organisations and manage subscriptions. The role of the account owner is automatically assigned and cannot be changed or given to any other user.
A manager is a person who has an ApprovalMax profile and has been assigned to an account to perform the same functions as the account owner. An account manager with almost the same authority, however, cannot cancel an account, apply for Partner status, assign account roles and remove users from Practice staff.
A user manager is a person who has an ApprovalMax profile and has been assigned to an account to perform the same functions as the manager. However, this person is not able to delete Organisations and doesn't have access to Billing and Subscriptions. Such users can manage users' access to the Organisations and Practice Staff.
A member is a person who has an ApprovalMax profile and has been assigned to an account as a related person to allow access to the Partner Portal. Users with the above roles can see members in Practice Staff and manage their access to the Organisations.