Imagine you are tasked with creating a Network Video Recording software $($NVR$).$ The software runs on a dedicated piece of hardware that you would connect to your local network. The software is responsible for exposing the underlying features of the hardware to the user. The hardware has the ability to connect cameras that follow the Real Time Streaming Protocol $($RTSP$).$ We allow multiple users to access the hardware via Viewer accounts, but we only allow one Admin account. Given the following features and considerations, come up with $6$ functional requirements and $2$ non$-$functional requirements that should exist for this system. You are allowed to add any features you think would be useful to this system to complete this assignment. give me reference please