in the subscpription section find the game that you want the codes for and drag and drop it to the left side. ds with AR must be hooked up. Or you can drag and drop to your custom codelist which is the box below subscriptions box, and then drag and drop custom codelist to the left when DS with AR is hooked up.
or you can do it like the poster above suggested. It will transfer every game's cheats that are available to your AR. If you just want certain games on your AR do it the way I suggested. I'm not sure how much space the AR has to store codes.