Duration for slideshow not showing up

On the options for the slideshow there is not option for the slideshow duration – the box is not with all the other options. I would love to speed it up a bit. Let me know if there is a way to enable that. I just reinstalled the plugin and reconfigured my slideshows due to another unrelated issue.

http://www.cascadiaholistichealth.com

http://wordpress.org/extend/plugins/nextgen-gallery/