Using TPM2.0+Secure Boot in Grub2 and CLOVER?

Question

GRUB

Windows 11 requires UEFI, Secure Boot and TPM2.0. It is not very clear why this is necessary, but if there is, then we will come up with something.
And how to use Secure Boot in the Grub2 bootloader and in the CLOVER bootloader? How to run Ubuntu through Grub2 SecureBoot and how to run MacOS X through CLOVER Secure Boot?

Answer 1

Windows 11 requires UEFI, Secure Boot and TPM2.0.

In theory, yes, but it works without them (by WORKS , I mean I spent half a day in the browser and climbed through the menus .) It is
enough to tweak a couple of values ​​in the registry
Option with a clean installation