Remap SECOND keyboard keys?

Question

Keyboard

Two USB keyboards are connected to the computer.
Is it possible on the second keyboard (or rather, by explicitly selecting the keyboard) to reassign the buttons so that they do not coincide with the first keyboard? Conditionally, all 101 keys of the second keyboard should be made analogous to media buttons? Alternatively, by assigning a hotkey combination of standard buttons to each button. For example, that the A button will send the Ctrl+A signal. It does not matter whether this is done by a program hanging in the background or changes are entered in the registry.
In this case, the first keyboard should remain completely "standard".

Answer 1

www.hidmacros.eu/whatisit.php
fully implements all my wishes, the driver itself does not need to be programmed, just script the necessary buttons.