How do I set up a virtual machine to test a new distro?

Running a Manjaro KDE VM in Gnome Boxes on my Manjaro KDE Laptop...

Installing and switching from KDE to LXQT.

https://www.howtogeek.com/193129/how-to-install-and-use-another-desktop-environment-on-linux/

Forgive the stutters, my machine was rather taxed as I was streaming and recording the install process.