Unlike Jaws, we provide a schedule for all projects (commercial) regardless of size. It becomes part of the contract documents. We use Microsoft Project. Basically you put down on paper what you already have in your head so everyone knows what's go on, who's responsible for what and when. At the end of the day it's a CYA tool. It's easier for the Plumber to ask for an extra few days when he stared the job late because the framer finished late because of bad weather.