The video demonstrates how to utilize the audit trail function within a system. It provides a step-by-step guide on how to enable and access the audit trail data for review. The process involves navigating through menu screens, adjusting settings for data storage, enabling security functions, and performing various actions to generate audit data, such as logging in and out users and executing tasks. The audit trail allows users to track and review activities, filter data by various criteria, and export it to external files for further analysis. The Lasair Pro particle counter can be used for remote or continuous cleanroom monitoring, and meets all current regulations such as ISO 14644-1 and EU GMP Annex 1.