You'd want to be looking at these[1] instead, especially SetFileSecurity[2].

As noted, the "minimum supported" version means exactly that, and does not reflect when the API function was introduced.

[1]: https://learn.microsoft.com/en-us/windows/win32/secauthz/low...

[2]: https://learn.microsoft.com/en-us/windows/win32/api/winbase/...