Microsoft Edge Dev browser now includes an experimental Extensions menu that offers a more organized way to manage the installed extensions in the browser. In order to use this feature, you will need to start Edge with special command line arguments. This feature lists all extensions installed on a dedicated expandable menu which can be accessed by tapping extensions icon integrated into the browser’s toolbar. This new extensions menu makes it easier for users to manage extensions and it’s a handy feature if you have a lot of extensions enabled in Edge.
Source: https://www.bleepingcomputer.com/news/microsoft/microsoft-edge-gets-a-new-extensions-menu-heres-how-to-enable-it/