Bms wiring for charging

Hi I’ve put together this for my charging system. I have two 3S batteries that are wired in series and connected to a 6S BMS. A previous setup I had charged Battery 2 to 12.4V and Battery 1 to 11.6V. IF someone could let me know if what’s wired so far is correct and how to connect the balance cables. The BMS has 7 leads as labelled on this diagram and confuses me. Thanks Heaps BMS

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https://dosimplecarbon.com/how-to-wire-6s-bms-to-your-2x3s-lipo-esk8/