I’m not exactly sure how to do that. Since this is an external plugin that we haven’t created, it would be best to contact the author/developer of this particular plugin for the proper solution. If you don’t find the answer you’re looking for, you could try a plugin called Meteor Slides – http://wordpress.org/extend/plugins/meteor-slides/ This is also responsive and you can individually add images exactly how you want them to appear in the slider.