Adding Windows to my Ventura internal SSD - is there a guide for this?

[bhuether]

Hi, I am trying to add windows to my existing Ventura internal SSD. That said, if that can impact Ventura performance then I will use a new SSD. For now just trying to use existing drive.

I have read this:

Installing and using BootCamp utilities | OpenCore Post-Install

But that seems to be a couple steps ahead of where I am, as it says that guide requires Windows is already installed.

Then I read here:

https://www.stellarinfo.co.in/blog/how-to-set-windows-partition-on-mac-with-boot-camp/

but at the dortania link it says BootCam drivers don't work as needed.

Now in my case, I don't really need any sort of boot manager, as I am fine just booting to windows from BIOS. So given that, can someone recommend the steps needed to get Windows 10 on to my Ventura APFS SSD (which has about 300 GB free) such that either 1) OpenCore will see the Windows EFI or 2) I just boot from BIOS directly to Windows without OC.

thanks!