This block injection from macOS SMBios table into Windows and leaves default windows's system definition (no more acidanthera specs)
At Misc/Security, set AllowSetDefault=YES.Bootstrap is recommended to multi booting but I think that's not mandatory, the question is that if Windows installer replace default OC's BOOT圆4.efi (from ur EFI disk folder) you'll not be able to boot macos unless restore this file (Step 5, from Instalation bellow).At Misc/Security, set BootProtect to None.At Misc/Security, set AllowNvramReset=YES.At Misc/Boot, set HideSelf=NO andPollAppleHotKeys=YES.OC 0.5.9 can auto detect windows bootloader.At Misc/BlessOverride add following String: \EFI\Microsoft\Boot\bootmgfw.efi.At Kernel/Quirks set CustomSMBIOSGuid=YES.NOTE: Starting with opencore 0.5.8, firmware UUID is optional once Custom SMBios mode was updated To get this, type: wmic CsProduct Get UUID at Windows Command Prompt.Necessary to avoid Windows activation problems
(3) Working NVRAM (native or emulated) and also available to be cleaned Pls, feel free to advise if there's any wrong, I'll be much thankful. This is not intend to be a guide at all, but instead, is just what I did to get dual boot with OpenCore.
Building a CustoMac Hackintosh: Buyer's Guide