I am trying to learn electronics with KiCad. I am working on a project, where I am trying to control a readily existing board with my own circuit. I would like to design this existing board in KiCad and import as a component, which means that I would like to design inner routings, a capacitor and a resistor inside this board + the pins available. Luckily the board is very simple. But I can’t figure out how to add wirings, components in the library editor. Do I need to add a separate schematic to my project?
Please feel free to correct my phrasing or vocabulary, if my message doesn’t make sense. I am a beginner without formal education in electronics.