Jeff is excited now. He looks through all of the options and sliders more thoroughly once again and decides to test something minor out first, before he really gets into it. Just to see how it works, and to see how he feels after using it.
"Let's try this..." mumbles Jeff to himself. He decides that his test will be on everyone in his home town, and that only he will know something has been changed. This way the entire world will not suddenly come crashing down upon his town as everyone flocks to find the cause.
Getting into his test, he decided that since, in his own opinion at least, there are not enough pretty things to look at, he would fix that. So he gives everyone additional breasts if they reside within a 20 mile radius of the Chronivac. And not just one additional breast either. Leaving them with anywhere between 4 minimum to 8 at maximum, and always in an even quantity and rows of 2.
If they are a man, then they will always have at least 4 like women, but with their first pair replacing their flat, male chest, and making their upper body from the waist up fully feminine. Everyone also would be incapable of growing any chest or back hair as well, and will only wear feminine style tops or dresses. Specifically ones which displayed their new and/or improved breasts and cleavage.
In fact, Jeff decides to make all of them actually try and show off their breasts, and welcome people staring at them, and that touching then would be seen as acceptable behavior, on the same level as a hand shake or a pat on the back.
Finally, due to the added weight from having at minimum, 4 breasts, but up to a possible 8, Jeff strengthens all backs, and spines, making them much stronger where they can effortlessly support the weight of their breasts without worry or injury. The last thing Jeff wants to hear are people's constant complaints about having sore shoulders and backs all the time.
He confirms all of these changes, making sure that only he notices that anything is out of the norm. He sets the process to happen gradually over the next 6 hours, starting randomly, and with each person taking a different amount of time to grow their new additions, while also starting at a random time as well. However all of the transformations will be fully complete by the 6 hour mark.
He then starts the process and closes down the Chronivac for now after password protecting it. Jeff then gets up and walks into his bedroom to wait. But on the way, he notices a full length mirror which he has never seen before, and which has been partially obscured by a myriad of cleavage revealing dresses that now hang down in front of it. The concern though, is that this mirror is within his own closet. It hits him that he never thought that he also would be effected by this transformation for some reason, but he doesn't really mind it either.