Section 4 provides that the advice of the agency must take into account any policy directions issued by the Minister for Finance to State authorities regarding financing of public investment projects as well as any detailed policy guidance in relation to the process, procedures and regulation generally of PPPs. The Minister must send a copy of every policy direction and policy guidance to the agency. Advice given by the agency may include advice about consultancy services across the range of technical expertise required to undertake such projects. The agency and the NTMA must at all times exercise due care, skill, prudence and diligence and act in the utmost good faith in the discharge of functions under the Act.