Disable/Remap Pg Dn key

The ‘Pg Dn’ key of my laptop (now more than 3 years old) is malfunctioning and is almost always pressed (hardware failure of keyboard).

How do I disable ‘Pg Dn’ key and how can I remap a combination such as ‘Shift + Pg Up’ as ‘Pg Dn’

Good evening :slight_smile:
Try https://forums.opensuse.org/showthread.php/507163-Remap-key-under-KDE
But instead of “Home” write “PgDown” in Action, and chose your favorite key combination in keyboard input.

(It is week end, what to do?)

I should have mentioned I’m using MATE right now.