Jamie knew what she really wanted, but was conflicted and looked nervously at Jeff. "Go ahead, Do whatever you want, we can undo it later if we want." Jeff encouraged.
"Well alright, but this might take a while, and I was in the middle of doing the dishes when you called me. Would you mind finishing them while I set this up?" Jamie asked
"Sure thing Mom." Jeff replied bounding out of the room and down the stairs.
Jamie set to work trying to figure out what things are classified as in the program...
Jeff's father, Jack, had passed away a few years ago when Jeff was only 13. It was tragic and entirely a wrong place wrong time thing. Jack was going to the ATM, crossing the street, and was struck by a vehicle. Jamie wanted to move on, time and again, but she always found an excuse not to. Jack wasn't perfect but she did love him and wasn't ready to let him go.
But what if he wasn't... What if instead of being struck by a car, something crazy happened and Jeff and Jack instead wound up sharing a body.
Jamie extrapolated Jack from her and Jeff's DNA and forced the Chronivac to create a profile for him. Then she got to work setting it up so that weekdays Jeff is in control, weekend's Jack emerges, and Wednesday nights after 7, for date night. Jamie reasoned. When Jack emerges, Jeff's body grows into that of his father as a full grown man and Jeff is no longer in control.
Jamie specifically wanted Jeff and Jack to be able to communicate and share experiences with one another. This way his father can teach him things like taking care of the house, car, finances and especially the guy things.
Jamie also realized this was an opportunity to make Jack better. A lot more athletic, a healthy bit more spontaneous since his life is a little more than 30 hours a week, more proactive and helpful around the house... and Jeff should get a chance to pick up those traits too, but how???
Jamie realized that Jeff is going to be an adult in the next two years and she would not have access to Jack once Jeff goes off to college or otherwise gets a life of his own... So Jamie decided that Jeff would absorb Jack over the next two years, gaining access to his skills and Jack's time taking over Jeff's body will slowly dwindle away, but leave Jeff with the knowledge of what Jack would recommend he do as well as a delicious build and an impulse to clean up after himself...
Jamie smirked activating the program, setting reality to change and none but the user to be aware.