A key part of making good plans is making good schedules. To make a schedule, start with a list of the tasks to be done and the hours each task will likely take. From the previous eight columns, you know how to estimate the time required to do each of the project's tasks. To be most useful for scheduling purposes, however, you need these times at a fairly detailed level. For most jobs, I suggest you estimate down to tasks of about 10 hours.
More detail generally means more accuracy.
As we will see next month, you will also need this detail to accurately track project status. Another important piece of information is the hours available for doing the work. When they first consider this issue, engineers often dismiss it as trivial. If their organization works a standard 40 hour week, they assume they will have 40 hours available to work on the project. This turns out to be a serious mistake.