I would think that for a 2 sensor camera in BI it would go something like this: Set up 2 cameras in BI, both with same IP but with different URL's to determine the channel and the stream type. This assumes that both sensors (channels) can provide 2 streams, main and sub.
One camera setup in BI:
101 – get the main stream of the 1st channel
102 – get the sub stream of the 1st channel
A second camera setup in BI:
201 – get the main stream of the 2nd channel
202 – get the sub stream of the 2nd channel