This chapter looks at the type of roles and structures necessary to manage business portfolios and programmes successfully. To implement business portfolio management fully in an existing organization, the challenge will be greater than implementing a programme management approach for a single, new programme, although many of the capabilities needed are likely to be the same. The business portfolio management director is accountable to the chief executive officer for ensuring business change is planned, directed and managed in an effective and efficient way using appropriate portfolio, programme and project management techniques. The business portfolio design authority is accountable to the business portfolio management director for acting as guardian for the organization's 'best practice' methods, processes, tools, systems and templates for authorizing and undertaking portfolios, programmes and projects.