Re-map specific keyboard keys

[clixclix]

Hi, as you can see in the picture, My Thinkpad L15 has got some "bonus keys" above the numeric keypad.
On a US keyboard layout, those three keys map correctly to: equal sign, open parenthesis, closed parenthesis
On my italian keyboard layout, those keys act as if I configured a US layout on a ITA keyboard (I get printed respectively: "ì", ")", "=" instead of "=", "(", ")" )
How can I reconfigure the mapping of those keys?
Note: a colleague of mine with the same laptop, using Windows, has the correct mapping without any configuration.
Thanks.

[Schwarzer Kater]

Did you already look for a solution in System Settings -> Hardware -> Input Devices -> Keyboard -> Hardware/Layouts/Advanced ?

[clixclix]

Did you already look for a solution in System Settings -> Hardware -> Input Devices -> Keyboard -> Hardware/Layouts/Advanced ?

Yes, I did... I found no solution there.

[Schwarzer Kater]

You then might want to look into e.g. xbindkeys (https://www.kubuntuforums.net/forum/...execute-macros - I use it in combination with xdotool to map my extra mouse keys to certain keys on the keyboard) or xmodmap (depreciated, but still working AFAIK) or xkb to name some examples.
All involve the CLI and they don't work in Wayland.

PS: The Arch Wiki (https://wiki.archlinux.org/) is also often a good source.