Needing to block out part of a camera's view can be achieved by enabling Privacy Zones. This feature will block out portions of the camera's live feed and historical footage.
Note: You will need to have Site Admin permissions to configure Privacy Zones for a camera.
Configuring Privacy Zones
Navigate to the camera you want to configure
Select the Info button and then choose Settings
Select the Privacy tab
Toggle Enable Privacy Zones
Using the grid, click and drag over the area you want to hide. You will see a black box drawn over the area
Select Apply
Note: Privacy zones are not retroactive. The camera may take a minute or two to update its configuration, after which you will see the privacy zones on the camera's live feed and associated historical video going forward.
Note: The D80 does not support privacy zones.