You use to be able to adjust the behaviour of dolphin/konqueror for a superuser so that a double click was required to open a file/directory (for example, see: https://forums.opensuse.org/showthread.php/453811-KDE-set-double-click)
Now, in the Plasma 5 universe, Dolphin lacks such configurability. Instead, the user sets it via:
http://paste.opensuse.org/images/95346358.png
But how does one easily (without having to log into Plasma as root) set the root user’s mouse click behaviour ?? … I’ve tolerated the (default) single click execute/open behaviour in Dolphin for the su mode as long as I can take … I need to change it, as its absolutely asinine