Date: September 10, 2017 05:20PM
Mormon singles conferences are sponsored by TSCC's regional single adult organizations, like this one: http://wyomontsa.com/
They are not sponsored by LDS dating websites, although those sites usually post a list of upcoming conferences.
What goes on there?
In the region where I lived, they were meat-markets (and, to a lesser extent, meet-markets). There were panels of speakers, workshops, activities, mingle time, usually some sort of church meeting in a chapel, and the dreaded dance on the final night (or every night, depending). I dreaded it, attended it, hated it during and after, and eventually, couldn't bring myself to do it anymore.
Women outnumbered the men. It was an ultra-competitive, shark-tank atmosphere punctuated by the same meaningless drivel about "living the Gospel" that one hears at regular church meetings. Everyone there was hungry, horny, and on the prowl except the about-to-be-engaged or engaged couples who showed up to flaunt their relationships.