Hi, Igor. I'm Robinson, and I’m happy to help you today.
You will need to create the VM on your computer normally and then export the VM to the external drive. Then when you need to the VM on another computer you can import it, you just need to make sure to select the option "Register in place" when will import the VM, this option will make the VM run from the external drive.
You can see more information at this link.
https://learn.microsoft.com/en-us/windows-serve...
I hope this information helps. If you have any questions, please let me know and I'll be glad to assist you further.