No, they add it to each person's ticket media. And each ticket can only have 1 return time at a time.
It started about 2 years ago. It is really an improvement. (Yes, I was fearful when it was first announced, but it has worked out well, especially since the disabled can now use FP too!) Yes, people would rent scooters and wheelchairs to try and bypass the lines, which meant some lines really backed up (mainly Pirates and Splash.) Now, everyone is on an even footing. You go to the HA area, and they will scan all the ticket media, and give you a return time of the standby time -10 mins. If the standby is 10 mins, they queue you then. When you return, you enter the queue for the HA line. Works very well. Just combine it with FP or MP and you will be fine!