Apparently you need the pro version of this plugin to get this functionality. There’s also something called Slideshow Sattelite, apparently the premium edition of that will allow multiple slideshows on a site.
I think you can workaround by creating a private post full of pictures, then using that post as the feeder to your second slideshow (because the [slideshow] command can take a post ID as a parameter). However, the resulting slideshow will have to have the exact same dimensions as the other one you created, as the settings are the same for all slideshows; also, I’m not sure how you set title/description info for the pictures (perhaps it picks up the alt/title tags?). Anyway, some things to try.
