Zend certified PHP/Magento developer

How to use multiple displays with Windows VM using qemu?

I’d like to have 2 displays, ideally with different DPIs (one standard and another using high DPI) in my Windows 10 VM for testing purposes. I have this in the libvirt description file:

    <video>
      <model type='qxl' ram='65536' vram='65536' vgamem='65536' heads='1' primary='yes'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0'/>
    </video>
    <video>
      <model type='qxl' ram='65536' vram='65536' vgamem='65536' heads='1'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
    </video>

and the VM does see the second display (it has Spice drivers installed), but I have no idea how to actually use it with virt-manager (version 4.1.0, from Debian Bookworm), i.e. there is no window for the second display and I can’t find how to show it anywhere.

With virt-viewer (version 11.0) there are 2 windows corresponding to 2 displays, but they are all but unusable: mouse position is wrong in the second display (probably due to the wrong scaling factor being used) and sometimes it stops working entirely.

What is the simplest way to have 2 working displays, ideally each in full screen on the corresponding physical monitor?