Move your broody hen(s) down on the floor, and put the babies under them. You can make a little "nest" with hay or shavings or whatever you have, if you want. Usually the hen will just be on the ground with the babies under her. Food and water need to be close enough for the baby chicks to get to it. They can walk but not fly or climb, so it needs to be pretty close and level. The chicks really don't need to eat or drink for the first day or two, buy you should go ahead and get them set up for it sooner vs later.