The PMBOK Guide emphasizes the importance of developing the project team. This includes improving competencies, team interaction, and the overall team environment to enhance project performance. In this case, the project manager should ensure that coaching meetings are in place for the new team member within the project timeline. This will help the new team member gain the necessary skills and knowledge to contribute effectively to the project. References: PMBOK Guide, 6th Edition, Chapter 9: Project Resource Management, Section 9.4: Develop Team