In what scenarios would you use the "Playback" feature in Milestone?

The "Playback" feature in Milestone is specifically designed for reviewing recorded footage, which is essential for investigations or audits. This functionality allows users to access previously captured video streams, enabling them to analyze events, identify incidents, and gather evidence. In scenarios where incidents occur, such as theft, accidents, or suspicious behavior, the ability to play back video footage can be crucial for understanding the context and details of what happened.

The other options pertain to different functionalities within the system. Changing camera settings and adjusting network configurations involve real-time management and setup tasks, rather than accessing historical data. Deleting old video files is a maintenance function that helps manage storage but is not related to reviewing footage. Thus, the use of the "Playback" feature is appropriately linked to the process of reviewing recorded footage for specific purposes like investigations or audits.