Alex
I think you can take the same steps as in the instructions - brown the pork chops on high heat in a deep pan/dutch oven, remove them, add the broth and deglaze. Add back the pork chops, and cook for a longer time. I found this article on how to convert pressure cooking time to stove top time, and there some more tips on what you need to do, take a look here:
https://missvickie.com/convert-pressure-cooker-time-to-stove-top/