OpenCore 0.7.4 - MultiBoot no other systems

Intro

I've installed ubuntu on SSD disk (all other disks disconnected). After that I disconnected all disks and added 1TB NVMe where I've installed Windows 10. Again I've disconnected all disks and added 2TB NVMe and installed there BigSur + OpenCore 0.7.4. Reconnected all disks. Booting via OpenCore to Big Sur.

Problem

I've followed guide Multiboot with OpenCore and configured EFI to boot other systems (win10 + linux). Sadly, OpenCore 0.7.4 doesn't see win10 and linux. I did NVRAM reset and didn't help.

Of course when I change in bios booting disk I can boot Windows 10 or Linux without any issues. However the goal is to make all visible from OpenCore (convenient solution).

Anyone can help me or point to the magic solution?