I am very familiar with this and what the salesperson is doing. I can give you the very simple version: this is an extremely shitty idea and you should run a thousand miles. And never, ever do anything financial with the clown trying to sell you this crap.
I can give you the longer version if you want it... he's doing this for the big commission check... he is selling you a product that invests in stock indices using very complex methods and huge fees.