You are a Microsoft Office SharePoint Server 2007 administrator. Your company has an Active Directory domain. You have a site collection named Finance on your SharePoint server farm. The Finance site collection is used by employees in the Finance department. The Finance site collection has a document library named Finance Documents. You create a workflow on the document library that requires approvals. You also create a content type workflow for expense reports that are stored in the document library. Senior managers report that they do not want to see expense reports until the other approvers have approved them. You need to ensure that expense report approvals only go to senior management after they have been approved by all other approvers. What should you do?