Time the arrival for late afternoon
New hens are easiest taught where home is if they wake up there. Collect them so you are back before dusk, carry them calmly to the coop, and set each one inside the house itself rather than letting them loose in the run to scatter and roost in a bush. A hen that spends her first night shut in the coop imprints on it strongly; from the second evening on, most return to it at dusk by themselves because it is where they woke up. Have everything ready before they arrive — bedding down, feed and water inside the coop for the first night, the pop-hole ready to close — so there is no fumbling with them already in your arms.
Put them in the house, and keep them close for a few days
For the first days, keep the new hens in the coop and its attached run if there is one, rather than free-ranging them across the garden. The restriction is what teaches the map: this is where food appears, this is where the roost is, this is safety. If they are joining existing hens, expect the pecking order to be renegotiated — squealing, chasing and the odd pulled feather are normal, but keep an eye on a hen being kept away from feed and water, and put out a second feeder and drinker so the bottom hen can eat out of sight of the top one. Two feeding stations settle a mixed flock faster than any intervention.
Check after dark on the first night
Go down with a torch once it is properly dark and count them. Most will be on the roost; occasionally one will be huddled in a nest box or on the floor in a corner, and on the first night or two it is worth lifting a hen that has bedded down in the wrong place onto the perch so she learns where the flock sleeps. A hen still outside — under the coop, in a hedge — needs fetching in, because a night out is when foxes find them. Shut the pop-hole after the count, every night, without exception; 'I forgot once' is the story behind most lost flocks.
The first week out and about
After a few days close to home, let them range a little wider, ideally late in the afternoon so dusk and the pull of the coop arrive before they have wandered far. Watch the new hens at feeding and in the run: the confident ones will be in the thick of it within days, while a shy hen may need the second feeder kept going for longer. Laying may pause while they settle — moving house is a genuine stress — and it resumes once the routine is boring again. Handle each hen briefly every few days so they get used to you and so you learn what each one feels like at a healthy weight.
Those after-dark counts are exactly the job that gets forgotten when evenings are busy, so put them in KinsLe's Care Teams for the first week — the dusk roost check assigned to whoever is home, ticked off with a timestamp — and every new hen is accounted for each night while she learns where home is.