In a hybrid project, it is common to use both predictive and agile approaches. If a key stakeholder is only familiar with predictive approaches, it could be challenging for them to understand and contribute effectively to the project. Therefore, it would be beneficial for the project manager to allocate time to mentor the stakeholder in the selected project approach. This would help the stakeholder understand the hybrid approach better and enable them to contribute more effectively to the project. References: Project Management Professional (PMP) Reference Materials, Professional in Business Analysis Reference Materials study guide.
Please note that the exact documents and page numbers are not provided as the information is based on general project management principles. For more detailed information, please refer to the specific guides and documents mentioned.