Edit 2024-02-05: The instructions below are outdated. There is an official PR (#2027) for mouse functionality. You should use that rather than what is described below. See comments [1, 2] below. ZMK mouse support
Best practices for PCB Design Schematics Power symbols should point upwards Ground symbols should point downards Sections should be labeled Nets should generally not cross Nets should be labeled Either global or regular labels are fine