I have the Discover IT secured and couldn't figure out how to set up the rotating 5% categories. Got on chat with the CSR and they helped me convert the card from the Chrome so I could take advantage of the 5% rotating quarterly categories. I already have the QS1 for 1.5%. In case anyone else is wondering, like I was, if you can convert. It's super easy and will take effect on day one of my next billing cycle.
Starting scores Jan 2016: 589-597
September 2016 MyFico: TU 710 EQ 699 EX 695 Credit Karma: TU 726 EQ 725