I had tried to do it several times in the past with previous versions of the GhostBSD and as far as I remember it worked.
Today I have tried to install the GhostBSD 18.10 with an option to install root on ZFS in UEFI boot mode and my new install just won't boot.
Please guide me into the successful install of the GhostBSD 18.10 with UEFI boot.

It's been several days since I have posted my "cry for help"...
It looks like nobody in the community who have seen my post can offer any help...
Should I take it that my curiosity as an average newbie isn't encouraged by the community?

Hi and welcome!
Sorry for the late reply. We are a very friendly and welcoming community. Some of us are quite busy, that's all.
If possible you should join our community on Telegram. Right here https://t.me/ghostbsd
Could you please give your machine's specs or make and model number?