The document discusses the roles of cross-functional teams in process improvement projects. It describes five key roles: the Champion acts as a buffer between the team and senior management; the Sponsor selects the project and provides resources; the Leader keeps the team on track; the Coach helps select members and clarifies roles; and team members are subject matter experts who handle assignments. Effective cross-functional teams for process improvement include representatives from management, finance, customers, HR, unions, and employees with subject matter expertise.