Has anyone created a VM from a 10.14.6 installation if so how?

Has anyone created a VM from a 10.14.6 installation if so how?
I apologise for making this a new thread, however, the forum is a bit opaque.
Ok, I am running parallellsVersion 18.3.3 (53627) 10.15.7. There a number of 32 bit apps that I want to be able to run.
I have VM's for XP, Windows 7.10.11 all of which work
I have an OS 10.14.6 installation which I would like to maker into a VM.
How do I do this?
Have you actually done this yourself?