PVOutput and Efergy Guide

Are there any guides for setting up a three-phase power with single-phase solar? Is this something I will need to donate to PVOutput before I can setup?

I have set up the primary device as Efergy with direction as consumption. Power is mains with secondary power as subtract. Further down there is a secondary device, but this is greyed out. Also not sure is I need extended v7 and V8 for the 3 phases.

Any help appreciated

Is this the best way to set it up, where PWER_SUB is mains and PWER is solar? In this configuration, my power value will decrease as solar increases. Or are people not subtracting solar to get true power usage?

General rule is to send the household gross consumption data.