We have a pole barn open on one side. We set up with a gated hurdle and field hayrack were the entrance gate opens so we can get in without the sheep getting out, then set mothering up pens along each side. There are fixed hayracks and drinkers at the back. They have the central area to loaf in and are penned as soon as they show definite signs of lambing down so each has a clean pen to lamb in. Once they've mothered up, the ewes have been wormed and the lambs tailed and both marked they go into a separate nursery shed for a day, so the lambs get used to finding their dam and don't attempt to suckle from other ewes. Everyone's set up will be different but this is what works for us.