QNAP Security VioStor NVR (Version: 3.5.1) - Manual (Page 94)

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To save the changes made to the E-maps, click to exit the Edit mode.
When clicking an E-map or an IP camera on the left, the E-map or the E-map with the
camera icon will be shown on the right immediately. The selected camera icon will be
highlighted with a blue bracket .
When double clicking a camera icon on an E-map, whether or not Edit mode is enabled, the
IP camera will be shown in single-channel mode on the monitoring screen.