John had been standing there the entire time. He had simply made himself unobservable by others so that they wouldn't notice him. This business that he was literally just starting, already was destined to flop because of this jackass Stew handing out free refunds by breaking labor laws. This idiot just sold a guarenteed $2000. But for some reason, he immediately refunded it, and not only that, was about to ruin his establishment for hiring a couple of minors to do modeling work for free, or arguably under duress. Now he had to fix this mess before the cops were called.
First he quickly turned stew into a hot women and changed her job to being the booth's "hands-on" model. The exact job that she wanted to push on to those 2 girls, well girl and former guy. Stew, now Sue, was already flaunting around her body, doing her best to attract any costumes that she could find. The failure of a person had become quite an attraction. The way her denim short shorts hugged her ass. How her spaghetti strap, white tank top was stretched rather tightly, being onlyup by the pressure formed with her large rack, because the straps were just dangling loose down both her arms. Her natural expertise at doing everything in black stelleto pumps with a 5 inch heel. Even the way her ass length, raven black hair fell down her body, framing all of her best features was alluring.
The best part was that she was now exceptionally talented at acting. Since she was the person incharge of the booth's operations, she couldn't be an idiot. On the contrary, John had increased her intelligence substantially. Bringing her IQ up to around 230. He then made her great at acting. Mainly with 4 specific roles, like a ditzy attention whore who can easily get herself off with her exhibitionism fetish, a lesbian model who would happily fuck any man who was willing to become a woman, a stupid sales slut who is great at using her body to push a product, or a horny bimbo who only thinks about filling her pussy with dicks from former women.
Of course all of it was just subtly implied, she never would promise a thing, nor keep anything she "hinted at" doing. She would just lure in customers who would fall for her beauty and get them to swap for free, only to charge them 2 grand to undo it. She would be sure to make him an absolute fortune. He even ensured that she was completely loyal to him by making her his wife, temporarily. As long as she made money, he would continue to be her "husband" so that sbe wouldn't attempt any shady business. John figured that he shouldn't underestimate a beautiful women with a 230 IQ. Even if he is omnipotent, he still is human, and humans make mistakes. So there wasn't much of a loss in making her his wife for now as a saftey net.
On the other hand, he now had to fix the situation with the young couple from a bit ago. For starters, he added 2 years to their age, making them both 18. That took care of the legal issues. Now for their misgendered male.
It was easy to find them, as they were still in the shoe store. Tina had just been forced into a pair of strapy high heels, which went up her calf to just below her knees. She actually pulled them off quite well for a former guy. Connie also seemed to be having way more fun than Tina.
John felt that it would be too much of a waste to just undo the sex swap. So instead, he gave Connie a large cock, and reversed their sexual preferences. Connie now was attracted to pussy, and Tina loved large cocks, it was just that neither of them knew it yet. He intentionally left that bit out, to watch how they slowly discover more than just his sex had been changed, and that she now was packing a dick even larger than her boyfriend's former one. And that both now were turned on by the others new equipment.