I have a couple of GitHub pages and by default, GitHub groups them based on the URL of the user or organization, such as <username>.github.io/<repository>. However, I want to set up a master page that serves as the entry point on the root URL <username>.github.io/ without including the repository name so I can refer from this root page to other projects.
I tried using the repository name as the username, <username>.github.io/<username> but it still resulted in a subdirectory /username. I couldn't find any mention of this feature in the documentation, is it even possible to achieve this configuration?
You should name the root repository like this "username.github.io" (not just "username"). More info: https://www.geeksforgeeks.org/how-to-build-portfolio-website-and-host-it-on-github-pages/