This unit portfolio discusses the importance of managing change, disputes, arbitration and mediation in project management. It highlights the relevance of tools and techniques for investigating and describing project processes related to developing new workings, facilities, equipment, plant and processes for justifying, designing, developing, or maintaining. The reading material emphasizes the need for effective communication, negotiation, and documentation to manage change and reduce the chances of disputes. It also stresses the importance of teamwork and professionalism in project management.