Schematic of Power Distribution Box Made by KC868-H32B Pro+KC868-E16v2+KC868-AK

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Firstly, thanks for sharing these diagrams and the companion YouTube video, they are amazing!

I have a couple of quick questions:

1. Do you use any specific software to create these diagrams?
   
2. To put the distribution box to use, if I wanted a relay to control a lamp I should just connect the lamp to the NO of any relay and then the neutral to one of the neutral "bridges" at the bottom part of the box?
   

Thanks!