How to make independent desktops on 2 monitors in Win10?

Question

System administration

Hello, I may have a slightly strange question, the user case is something like this - there is a main monitor 21: 9, on it there are two windows in parallel, usually and several more desktops, on the first editor and browser, on the second explorer and console, on the third there may also be a graphic editor.
And on the left, I put another smaller monitor vertically, it usually has a manual, a documentary, usually all the text fits in height, it’s convenient to peep into the documentation and immediately apply it in your project.
But as you understand, I switch desktops in Windows 10 and everything also jumps on the left monitor and a blank screen appears there, I would like to use an additional monitor as informational and always be on the first desktop, in the same MacOS I could on each monitor to flip tables separately.
I was already thinking about such an option as connecting a raspberry to that monitor and let something of my own hang there, but again there will not be such a convenience to pull the mouse to the left and look through it ...
Maybe in some insider versions (I can put them, I have a license on the firmware and registered in the testing program) this is implemented or there may be tweaks or adequate third-party software without glitches ...