I’m new. I admit it. You can throw rotten vegetables at me if you want.
I was able to do most of what I wanted through editing existing parts, but in some cases I need to change the pin/hole placement or spacing from what is presented in the default part. I don’t see any tools in Fritzing to edit the PCB layout of the part. Am I missing some menu somewhere? The PCB tab in the editor seems to just be a way to see the footprint of the part, but no way to edit it.
You can not edit the part graphics in the parts editor, but you can load a new image to replace what is there. For each view. See the tutorials for some details.