Worked on the mautic/mautic repository to enhance access control within the User Management interface by implementing a permission-gated UI improvement. Addressed a security and usability issue by ensuring the User Management header is only visible to users with the appropriate permissions, thereby reducing confusion and aligning UI elements with backend access policies. Utilized PHP for backend development, focusing on robust permission checks for viewing users and roles. Delivered a targeted, auditable patch that resolved issue #14345, with careful attention to code hygiene and comprehensive test coverage for access control scenarios, supporting both the security posture and maintainability of the codebase.