Press Chicken/Meat,
Add in oil, Garlic and celery
Lightly brown (this will happen in seconds) and then add in ribs, one slab at a time, browning each side, removing to a tray and continuing on through all the pieces.
Once each slab is browned, (pretty much 1 minute per piece) then remove all
Add in 1 cup of water
Place the ribs in slathering each layer with barbecue and continue to stack to the MAX line never further.
Add in the extra 1/2 cup of BBQ to the top
Close and lock the lid
Make sure to put the SEAL part of the gasket on and not VENT.
Program the Pressure Cooker by touching CHICKEN/MEAT button and then Cook Time Selector to 1 hour (that is the max it will allow)
As soon as that cooking revolution is done reset it for an additional 10 minutes.
Allow the meat to go through the natural cooling process (do not turn to vent when it is done).