Possible duplicate, but I really couldn't find a solution. I would like to adjust my US keyboard layout, e.g. to add possibility to type some special characters on combination of right Alt + another character, etc.

Moreover, my arrow up is dead, so until I buy another keyboard, I'd like to use my right shift as my arrow up, ASAP.

However, there seems to be no way how to edit my keyboard layout easily in Xubuntu :( I found no editor and I really don't want to spend years in some configuration files and terminal (not that I can't, but I really really don't want).

• KLE - the only editor I could find, but no installation guide, no package, no PPA, no idea how to make it working (and uninstallable if not needed one day)
• Editor in Ubuntu - apparently not present in Xubuntu
• I found several tutorials how to change the layout, but they all seems to be complicated and not easy to follow. I don't want to spend a weekend in terminal or so, I am looking for an app to launch, make some clicking, finish my work by hitting Save button and - done!

Please, is there such solution? For humans?