Have a Productive Project Plan
Every roof is different with each project involving multiple steps that translate into days on the job.
Access and Egress to and from the roof will dictate where you start and end each shift to complete your daily tasks while still allowing crews to get on and off the roof. Planning this will also affect your ability to seamlessly spray out your roofs intermediate and topcoats without leaving unfinished patches of areas as rooftop escape routes. You should literally be able to back down and out to your roof exit point with your spray line tender removing excess line from the roof and you spraying the last areas before climbing down the ladder for the day.
By taking a few minutes to sketch out a roof plan or highlight a Google Earth Roof Closeup to show best methods of working through each work process on the roof you establish in the minds of your crew items you have already considered when inspecting and bidding the job. Your crew will appreciate your well thought out ideas. I have found when I demonstrate to my crews, I have thoughtfully considered the job they will begin to follow suit.
In the process of mobilization and bringing in the foreman or supervisor it is best to interact with them while preparing the workflow plan to obtain proper buy in from the person who will be on the job managing production. By doing this you make it their project as well. And remember: trust but verify as the project progresses.
Share you project plan with your client. You will take his worry level down a notch or two by demonstrating how much planning and care has gone into a successful and worry-free project. In the process you clarify what expectations you have involving things the owner will be providing to facilitate the progress of your work as well.