Final answer:
The project integration management knowledge area intersects with the initiating process group when developing project charters, as these charters are what grant authorization to start and allocate resources to the project.
Step-by-step explanation:
Project integration management involves coordinating all project elements, from delegating tasks and managing resources to communicating with stakeholders. By taking a holistic approach to managing projects and their interdependencies, it allows you to execute projects while keeping the big picture in mind.
The project integration management knowledge area maps to the initiating process group through the activities of developing project charters. This is because the initiating process group includes activities that define a new project or a new phase of an existing project by obtaining authorization to start the project or phase. In the context of project management, the project charter is a formal document that authorizes a project's existence and provides the project manager with the authority to apply organizational resources to project activities.