Make sure someone keeps that fire going! Fire is life. It is food, defense, comfort, and time itself if needed. The guy doing so needn't be skilled at outdoor stuff, but must be competent.
If someone other than the fire watcher is familiar with gardening or farming, have one such individual plant the seeds we have. Once they're planted, this individual should mark the garden off from everything else so no one walks on it. Ideally, there would be a quasi-fence of sticks stuck in the ground or something around the garden.
Our second priority at this time to make a place where we can spend the night without freezing or being totally miserable. Some people should locate a dry hole, nook, or something sheltered by the tree if our current location is damp. They should make sure that it's big enough for everyone to sleep in without being too crowded; if it isn't, they should look for more space. Ideally, we'd have separate "chambers" for men and women, but if we don't have enough big ones, we'll make do. Next, they should gather dry leaves and such and lay piles of them over the harder parts of whatever. Or start at a later step if we've finished the first few. Or check around for other possible living-quarters-to-be. Or adorn our current sleeping areas so they're more comfortable.
Anyone left over or finished with their previous task should try to find more food sources. Rivers with fish, good-sized fruit trees, areas of rich edible flora or fauna, etc.