Keba Wallbox installation - with surplus loading

Hi,
I’m quite new to Home Assistant and do not know whether everything is as it supposed to be …
I configured the Keba Charging station this way:
grafik
grafik

… and I see now a few entities:

  1. How do I configure “surplus loading” with photovoltaics?
  2. I’d like also to load a few kWh at night … with ioBroker it was quite simple. How to do it?