Developed and delivered a subgroup tracking feature for the ocsf-schema repository, enabling the addition and removal of nested groups within group management. Focused on schema development using Markdown, the work enhanced hierarchical group representations and addressed previous limitations in modeling nested group structures. All changes were consolidated into a single, traceable commit, with thorough documentation updates in the CHANGELOG.md to reflect new subgroup management capabilities. This feature improved the accuracy and scalability of access control scenarios by supporting more complex group hierarchies. No major bugs were reported during the period, reflecting a focused and stable engineering approach to schema evolution.