According to the PMBOK Guide, a project manager should refer to the communications management plan, when facing issues with both the agile delivery of the product and the predictive development of a marketing strategy, and needing to receive feedback from stakeholders located in different time zones. The communications management plan is a component of the project management plan that describes how the project information will be planned, managed, monitored, and controlled. It also defines the communication requirements, methods, formats, frequency, and channels for each stakeholder group. The communications management plan should address the challenges and opportunities of working in a hybrid project environment, where both agile and predictive approaches are used. The communications management plan should also consider the diversity and distribution of the stakeholders, and ensure that the feedback mechanisms are appropriate, timely, and effective. By referring to the communications management plan, the project manager can ensure that the project communication is aligned with the project objectives, stakeholder expectations, and project methodology. References: PMBOK Guide, 6th edition, pages 89-90, 377-378.