What additional feature is most likely to be requested by Rachel's organization to enhance the effectiveness of their CCTV monitoring system in responding to theft and other issues, considering that the system is used continuously in their main office building and employs cameras connected to displays for real-time monitoring?

Digital video recorder (DVR) is a device that records video in a digital format to a disk drive, USB flash drive, SD memory card, SSD, or other local or networked mass storage device. DVRs are commonly used in homes to record television shows, in businesses to monitor security footage, and in law enforcement to record evidence.
DVRs are typically connected to a video source, such as a cable or satellite box, a security camera, or a video game console. The video signal is then digitized and stored on the DVR's storage device. DVRs can also be connected to a television or computer so that the recorded footage can be viewed.
DVRs offer several advantages over traditional analog video recorders (VCRs). DVRs do not degrade the quality of the video signal, and they can record for much longer periods of time. Additionally, DVRs can be easily connected to computers for editing and sharing recorded footage.