In an agile project, the servant leader plays a crucial role in ensuring that the team understands and adheres to the project's rules and guidelines. In this case, where there is a high risk of a team member disclosing confidential project details, the servant leader should include a restriction against such disclosure as a ground rule. This rule should be reviewed at the end of every iteration to ensure that all team members are familiar with it and understand its importance. This approach not only addresses the risk but also fosters a culture of trust and respect within the team. References: Project Management Professional (PMP) Reference Materials source and documents, Professional in Business Analysis Reference Materials study guide.