This document section discusses customizing the OS in a PCS 7 system. It covers topics like user administration and authorization concepts, picture navigation settings, the OS project editor, time synchronization configuration, alarm handling, status displays, and making WinCC object properties dynamic. The document provides information on configuring operator rights, presentation of events and alarms, status displays connected to tags, and making object properties dynamic based on tag values. It aims to teach the user how to customize various OS aspects in PCS 7 including user authorization, time settings, alarm management and dynamic displays.