KOReader Page Turn Gestures

Hi,

I‘m starting to use KOReader more and more on my Kindle and I am very happy with it.

One minor problem for me is the following, though:
As a left-handed person, I would like to be able to tap on the left side to turn one page forward, but at the same time use a swipe left to do the same.

But it seems that I cannot configure this behavior. What am I missing?

Cheers, Joachim