Members of a Team are assigned a role. These roles determine the scope of activities that individuals are permitted or restricted to perform within the Company. Users who are not part of any team are unassigned members and do not have access to any Project.
An Admin can invite themselves to a team to be part of it. This is useful when the admin has associated the company's social accounts and wants to benefit a particular team so that users of that team can use the company's social accounts to track social content.
Neither of these Roles, including the Company Admin, has access to the Middleware Configuration page. Your designated Customer Success Manager will need to give specific access to the Users that require these permissions.