Developed and delivered the Class Registration Week Selection feature for the dungkhmt/openerp-micro-service repository, focusing on enhancing the class registration workflow. The implementation allowed administrators to define start and end weeks for class registration, with built-in overlap validation to prevent conflicting periods. Leveraging React and Material UI, the developer updated the RegisterClassScreen to display selected week ranges clearly within the registration form, improving user experience and reliability. The work was completed using JavaScript and JSX, emphasizing frontend development best practices. This feature addressed scheduling accuracy and reduced registration errors, streamlining administrative processes without introducing any new bugs during the period.