Option for 2 or 4 batteries (2 different series)

Arducopter V4.06

I have a setup that Id like to be able to run 2 or 4 batteries. Both sets of batteries will be ran in series, 2 series total. Both series go to a mauch PL sensor, then to the X2 Hub, then power cube.

Mauch’s diagram shows the sensors with batteries ran in parallel.

My question: Can the configuration accept the variation between 2 or 4 batteries? Is this where Batt2 Monitor comes into play?