I need a separate window. My WFH environment I use every day has three screens stitched together for 7680x1440. On the left third is my primary remote desktop

I need a separate window. My WFH environment I use every day has three screens stitched together for 7680x1440. On the left third is my primary remote desktop app that connects me to work with a window for my old desktop PC. The middle third has 320pixels reserved on the right for context-sensitve notes, then splits the rest in half with the left half being my timesheeting/ticketing app and the right half being a decent plain text editor as a scratch pad / diary combo. On top of that I have a set of tabbed windows (using Groupy) from various apps like a file manager, browser, Slack, email, or command prompt. The right third has the left 320 pixels reserved for a music player (Winamp), VOIP softphone, and clipboard manager. The rest of that portion is another set of tabbed windows usually at least including a second remote desktop session to my VDI and another browser window. My browser and command prompt are tabbed. My file manager is dual-pane and tabbed with a preview pane. What you're describing sounds like what was tried and failed with Windows 8.