Tech using: JS, jQuery, CSS3, HTML5, and Anguler(4+).
User's system is usually a Windows machine running 2 monitors.
Is there a way to programmatically force maximized window on the user's machine and one further force it across multiple monitors?
The only thing that is coming to my mind is somehow grabs the user's monitor size or monitors size.
The users (a certain set of people) for this Web App - want it to take up the entire screen views.
It's user's responsibility to resize browser window to the appropriate size. A regular window (not a pop-up that was opened with window.open, as another answer explains) cannot be controlled by a website because a website doesn't own this window - there may be other tabs in this window that are equal in rights.
The users (a certain set of people) for this Web App - want it to take up the entire screen views.
A desktop application (Electron or NW.js) may be considered to provide required UX for for this set of people. In its most simple form it can be just a wrapper for a website with necessary usability improvements.