In conjunction with the foregoing, a Clearing Member shall ensure at all times that:—
2.20.3.1 each of its Customers and their respective related corporations for whom such Clearing Member also maintains accounts as Customers of the Clearing Member (each such Customer and its related corporations to be hereafter referred to as the "Collective Customer"); and
2.20.3.2 each House Account carried on its books (collectively the "Collective House Accounts"),
shall comply with the respective position limits as may be applicable to them individually or collectively as may be prescribed by the Clearing House from time to time.