If, come night, you see that they have all moved in and settled down inside, I would recommend that you move the nuc to the place where you want the hive to be placed permanently.
By moving them the first night, when they learn their location in the morning, they'll settle on the place you want, If you wait a day or more, they will have already learned their location on the roof and, unless you move them a long distance (over about 5 miles) you will lose bees in the transfer,