According to the PMBOK Guide, the project manager should use interpersonal and team skills to manage the team and resolve conflicts. One of these skills is conflict management, which involves identifying and addressing the root causes of disagreements among team members. In this case, the project manager should try to understand why the team member is absent from the meetings and what are the possible impacts on the project and the team. The project manager should also communicate the benefits of attending the meetings and encourage the team member to participate more actively. This way, the project manager can foster a collaborative and respectful team environment and avoid potential issues such as poor communication, low morale, or missed deadlines. References: PMBOK Guide, 7th edition, pages 282-283, 287-288.