Steps to customized MFE in Sumac

Hi, everyone. I am confused to follow the tutor-mfe documentation on GitHub - overhangio/tutor-mfe: This plugin makes it possible to easily add micro frontend (MFE) applications on top of an Open edX platform that runs with Tutor. . Can you help me to explain the steps to customize header and footer?

Have you tried using frontend plugin slots? Customizing Site Header Using Frontend “Slots” — Latest documentation

Thanks for your response. But where I should place the env.config.jsx ?

Does this page help? Use A Frontend Plugin Framework Slot — Latest documentation if not why not?