It basically runs and creates the same global hotkeys as explorer.exe would for those Office ones, but it does so right before explorer launches so it can’t assign them anymore. After that, the program disables them so you’re free to use the hotkeys for other programs.
It’s part of the registry and cannot be reprogrammed without essentially bricking your system
There’s a way to disable the shortcuts so they can be remapped: https://github.com/midrare/hyperenable
It basically runs and creates the same global hotkeys as explorer.exe would for those Office ones, but it does so right before explorer launches so it can’t assign them anymore. After that, the program disables them so you’re free to use the hotkeys for other programs.