It’s been a while since I set this up. A quick search gave me this…
https://hackintosher.com/guides/virtual-macos-use-macos-sierra-virtual-machine-vmware/
…which I seem to remember is what got me started. I ended up able to use the latest VMware Workstation and upgrading MacOS within the VM worked.
It does all work with a little perseverance and it performs superbly with Unreal. I have an 8-core Intel with 32MB ram. Knowing it CAN work is half the battle! 