This document provides instructions for updating employee assignments over time in Project Accounting. It describes how to view and change an employee's organization, job, location, manager, or billing title by entering new assignment details with an updated start date in the Assignment History region. The region will then display one row for each change to the assignment details, showing the valid dates for each change. To make an update, the user queries the existing assignment, enters a new start date, updates any values in the New Assignment region, and saves their changes.