[Plugin: SuperSlider] Confuse with the formfolder

I am following your instructions in this link: http://wp-superslider.com/howto/slideshow-how-to-use-the-from-folder-option

Got the step one but confuse in step two. Where I can find the fromfolder to set it?

Where will I put this code >fromfolder to: fromfolder=’image_sets/set_one’< ? Is it on the page on the gallery if not where? Need an urgent reply, thanks