In OSX Terminal there is an "⌥+Mouse Click" combiantion for putting cursor at random position. How to do the same in Konsole?

tl;dr: you don't.

Long story: this is a feature of the shell inside the terminal, eg. vim will move the cursor by simply clicking "somewhere" (set mouse=a)
So bash/zsh/tcsh/... (assuming you're trying to do that) would have to provide the feature (notably since the cursor *needs* to be somewhere in the prompt)

Most shells support jumping between word positions (try ctrl+left/right), but I'm not aware of a setting to clickposition the cursor (after all, mice don't make much sense in a textshell)