Let me know how the light works
might even do that before your squats LOL see if it works.
You don't need a big light just a light they can see like a 15 or 25 watt
I leave mine on all night for them for awhile. then just turn it on before dusk and turn off if you want later.
Do not leave them out
You will also find if you have a light on the chicks will go in on their own when it starts to get dark might have to put them in a few times but they will go in on their own before you know it.
and as they grow they will go in to roost on their own even if free...