Yo. How do I make this from Express Visual Studio for Desktop 2015:
Point towards a Documents folder on any given computer (current user)? Because I can only make it install on my computer's specific documents folder, and my googling doesn't give me much insight (especially since all of the results point towards earlier versions which I find no resemblance to with Express 2015).
I think you misunderstand what that publishing path is for. That isn't how applications get installed, it's the location that the files get pushed to so that they can get installed from there. It's also used for web applications to push the app out to the web server.
This extension will help you create an actual setup project, if that's what you are trying to do.