The idea that a family can buy a batch of chicks, stick them out in a field and collect their eggs everyday is NOT realistic.
Hens need to be kept closed up on their coop until they are used to a routine of daily feed and watering and through their first laying cycle, when they learn to lay where you want them to. You may need to make adjustments to your coop and nestboxes until everything starts working well. Another key is that the coop must be the only safe place available for them where they are. If there’s an open building nearby or a set of bushes, they’ll make that home instead.
Establishing a flock of free-range hens takes time.