B.C.
Plan things in 1hr increments. Say, playtime and breakfast between 8am-9am. Diaper changes and getting dressed, hair, etc. from 9am-10am. (I always let the parents bring them in jammies b/c it's easier for they).
Now it's time for cleanup while they do coloring or a toddler craft or a short cartoon. Outside time after the craft, then naptime, etc. Plan for an easy way to keep them occupied while you do cleanups about 3 times a day. You'll find that they will pull EVERYTHING out and it's dangerous for them to be tripping over things. Also plan for diaper changes throughout the day. It's easiest to do them all at once, rather than scattered.