Add as many "bgpin-single" divs as you like, they will be the sections with the background images.
They must all be contained within the bgpin-group div.
<div class="bgpin-group"><!-- the parent container -->
<div class="bgpin-single your-bgpin-single-first-background"><!-- add as many as you like -->
<!-- your content here, style as you like -->
</div><!-- /.bgpin-single-content -->
</div><!-- /.bgpin-single -->
another added like above (need at least two for the effect to work)
<div class="bgpin-single your-bgpin-single-second-background">...
</div><!-- /.bgpin-group -->
The child elements (.bgpin-single) will need background images attached
add your background images
Just add "bgpin()" to your parent holder element.