The question is, why do you want them to imprint on you?
If they end up being males, they will likely become aggressive with you during mating season. When an animal imprints on a human, it believes that person is their species, and that you are competition, a potential mate, and so forth.
It complicates things. And it isn't something I'd reccomend doing intentionally
Being a week old, they're past the age of imprinting, if they've already imprinted on eachother. As this happens very soon after hatch. You can still tame them though, spend time with them, hand feed, try to stay at their level, and don't reach down for them or hover over them etc unless you have to. You can achieve a good relationship with your birds without having them imprint on you, just takes time and patience.