Post-Install
Note: Since I copied the USB boot drive (created by UniBeast-9.0.0) EFI content to my SSD's EFI,
I didn't use MultiBeast for the post install.
1. Open Clover Configurator on your USB stick main Partition
2. Mount EFI → SSD → Mount Partition
3. Mount EFI → SSD → Open Partition
4. Apply most Z390_Mini_ITX_EFI.zip kext from the top link into /Volumes/EFI/EFI/CLOVER/kexts/Other
and /Volumes/EFI/EFI/CLOVER/kexts/10.14 accordingly.
5. Install MultiBeast 3rd party USB patch if you want to use 3rd party USB hubs