During June 2025, Daniel developed the Subgroup Tracking feature for the ocsf-schema repository, enhancing Group Management by enabling the addition and removal of nested groups. He approached this by extending the schema using Markdown to accurately represent hierarchical group structures, addressing previous limitations in modeling nested relationships. Daniel documented all changes in the CHANGELOG.md and consolidated the work into a single, traceable commit. His schema development skills ensured that the new feature supports scalable access control scenarios, improving the accuracy of nested group modeling. No bugs were reported during this period, reflecting a focused and well-executed engineering effort.