I reinstalled my system and now use KDE5 instead of KDE4. The system (e.g. in boot) uses the Compose Key I'm used to - Press Right Shift+Right Ctrl,a,e and I get æ.
But I'm unable to convince KDE to do so. In the KDE Keyboard expert settings I achived that it is now AltGr+Right Ctrl.
Question: How can I setup to either use system settings or set Right Shift+Right Ctrl as I'm used to?