If the parents are tame or semi-tame, you can handle the babies while they're in the nest and when they're a little older, you can take them out and cuddle and interact with them and return them to their parents. They may not be quite as tame as handfed babies when they are just weaned, but once they go to their new homes and get more one-on-one attention, they should turn out like any handfed baby.
That said, it would still be a good idea to learn how to handfeed babies, in case there's any problems. An avian vet or breeder in your area might be willing to show you.
Also, it's hard to predict exactly how much formula a baby will go through anyway. The safest way to handfeed babies if you are new, is to spoonfeed them - there's less risk of aspiration, but there will be more mess and spilled formula. Plus babies have their own ideas about how much formula they may want per feeding - and if you make too much, the extra has to get tossed, it doesn't reheat safely.
EDIT: I noticed that you had the baby with a splayed leg. In this case, you probably will have to pull this baby for handfeeding - and maybe one sibling for it to grow up with. Otherwise the parents will probably try to remove the leg brace and might injure the baby's legs in the process. Since the babies are still very young, make sure they have a rough surface to stand on (ie. put some wood shavings or something in the bottom of the nestbox if the bottom of the box is bare) and there's a chance the baby might recover on its own. But if it still has splayed legs by 2 weeks, you'll probably need to pull the baby so you can properly brace the legs. I would take this time to find out as much as you can about handfeeding - find a vet or breeder who can show you if possible. It isn't hard to do once you have experience, but mistakes can be potentially deadly.