The project manager should coach the product owner on how to create a product backlog, as this is a key artifact in Scrum and Kanban methodologies. The product backlog is a prioritized list of features, user stories, or requirements that the product owner wants to deliver in the project. The product backlog is dynamic and evolving, and it reflects the value and vision of the product. The product owner is responsible for creating, maintaining, and refining the product backlog, as well as communicating it to the development team and the stakeholders1. The project manager can assist the product owner by providing guidance, feedback, and tools on how to create a product backlog that is clear, concise, and aligned with the project goals and scope. The project manager can also help the product owner to use agile techniques, such as user story mapping, story splitting, and backlog grooming, to break down the functionalities into manageable and testable chunks, and to prioritize them based on value, risk, and dependencies2.

The other options, encouraging the team to subdivide the project tasks, creating a work breakdown structure (WBS), or discussing the product owner’s responsibilities within the project team, are not the best ways to assist the product owner. Encouraging the team to subdivide the project tasks may help the team to plan and execute the work, but it does not address the product owner’s confusion on how to start delivering the functionalities. Creating a WBS may help the project manager to define and organize the project deliverables, but it is not a suitable artifact for agile methodologies, as it is static and rigid, and does not reflect the changing needs and expectations of the customers and stakeholders3. Discussing the product owner’s responsibilities within the project team may help the product owner to understand their role and expectations, but it does not provide practical guidance on how to create a product backlog.

 1 A Guide to the Project Management Body of Knowledge (PMBOK® Guide) – Sixth Edition, Chapter 5.4.2.2 2 Agile Practice Guide, Chapter 3.2.2 3 What is a Work Breakdown Structure (WBS)? - Project Management Institute