The most basic benefit that a computerized timesheet system gives is one of automation, timesheet information is entered into a computer rather than onto paper. This eliminated the need for people to transcribe their timesheet information from a diary onto a paper form, and then for administration staff to re-enter this information into a job costing system. The computerization allows you to completely eliminate the middle steps. Staff enter information directly into the job costing system.
Huge project plans with hundreds of tasks and multiple project breakdowns can be intimidating, even to the authors of such plans. Employees know that each one of those tasks represents work, and summation becomes overwhelming. Don't even think of flashing a plan like that around the office. You'll scare off all your good help! A better approach would be to introduce the major sections of the plan, without showing the actual tasks. In fact, don't bother enumerating the tasks for each section until you complete the one before it.