Chia-Hang Chen enhanced access control configurability in the trinodb/trino repository by developing an optional context properties file for the Trino OPA plugin. This feature allows administrators to define additional context for OPA queries, supporting more flexible and policy-driven access control without requiring code modifications. By leveraging Java and focusing on plugin development and security, Chia-Hang enabled environment-specific policy customization, aligning with deployment efficiency and security objectives. The work demonstrated a targeted approach to improving access control mechanisms, addressing the need for adaptable security policies within Trino deployments. The contribution was focused and technically sound, reflecting depth in access control engineering.