There is a schematic on the cape prior to my toggling ideas around with KiCAD and then I added some parts in the schematic but…
a. I am not sure if my schematic is correct.
b. I do not know much about schematic making.
c. The template does not allow for pin assignment from/to the headers on the template.
Having no schematic in KiCad you give up may be even 90% of help you can get from it in designing PCB.
The main task realized by PCB design software (like KiCad) is to keep eye on your PCB to be in accordance with your schematic. Having no schematic KiCad don’t knows what is correct and what wrong at PCB.