If your bones are not cooked, I recommend roasting them at 425* for 30 minutes, optional, but it adds richness. It is not necessary to roast the chicken feet (just make sure the skin/nails are removed, ie: no yellow skin).
Place all ingredients into Instant Pot.
Fill with water to the ‘PC Max’ line.
Pressure cook on high pressure for 3 hours.
Click the ‘keep warm’ button so the keep warm feature is OFF.
If necessary, release pressure. I typically start it in the evening and let it cook and naturally release pressure overnight.
Pour the contents of the Instant Pot through a fine mesh strainer into a stock pot.
Optional: replace the contents of the strainer back into the Instant Pot, fill with water, 1 tbsp of salt, and repeat.