So I currently have two lines on a family plan (AT&T). I am eligible for an upgrade. I want to pre-order iPhones for both lines but I also want to CHANGE my Family Plan minutes. I want to order a white iPhone so I need to do this through Apple so, is it possible to do it online via apple.com or do I have to go to an Apple Store? Has anyone been able to change their Family Plan while ordering an iPhone in the past? Any answers would be greatly appreciated. Thanks!