QNAP Security VioStor NVR (Version: 4.0.0) - Manual (Page 58)

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The following options are provided under the ‘Video’ tab.

Highlight the video window when an event is triggered: The video window will flash if an
event is triggered.

Display unauthorized channels: Select this option to show the channels that the user
does not have access right to monitor.

Display unconfigured channels: Select this option to show the channels that have not
been configured.