Ah, this is a vexed question.
You see the Printer section in the calibration software because that's the same software they provide with all their devices. Unfortunately, your i1DisplayPro can't calibrate printers. You need the MUCH more expensive hardware for that.
Please please PLEASE don't do this. Printing your own is for fools and zealots. It's not worth the trouble, and it's MUCH too expensive. For starters, you need to buy the very expensive calibration hardware I just mentioned above. And then all the ink and paper you use just to get the calibration right.
Sell that thing, and find a good lab.