This unit portfolio for PPMP20011 Week 10 covers the topic of Contractual Arrangements in Commercial Projects. It includes descriptions of diverse and complex government and non-government project contractual arrangements, common arguments using logic, persuasion and influence factors, methods of project negotiation, conflict management, and stakeholder engagement, methods of identifying and reconciling inconsistent and conflicting objectives and drivers, and project management tools that help avoid or provide conflict resolution via negotiated solutions. Supporting documentation includes readings from the PPMP20011 Unit Profile and Moodle website, as well as other sources such as the PMBOK Guide and the Law Handbook.