Worked on governance and process improvements for the AliceO2Group/O2Physics repository, focusing on the PWGEM directory. Updated the CODEOWNERS file using YAML to reflect new maintainers, which streamlined pull request routing and clarified code ownership responsibilities. This change aimed to reduce errors in PR assignment and facilitate faster, more accurate code reviews, enhancing collaboration within the PWGEM team. No major bugs were addressed during this period, as the primary effort centered on refining code ownership management practices. The groundwork laid by these updates also positioned the repository for potential future automation in pull request approvals and governance workflows.