Yes you can do that since recently! If you open the app store in the Station app and click on the "+" button at the bottom right of the screen, you can request

Yes you can do that since recently! If you open the app store in the Station app and click on the "+" button at the bottom right of the screen, you can request an custom app such as an internal admin app you are referring to. As for adding an internal electron-based web app it's not yet possible but it's something we could imagine indeed!