The first step is to put your Instant Pot on the Saute mode.
Pour in the olive oil and then add in your roast. Make sure you brown the roast, which takes about two minutes per side.
Take out the roast and then put in your celery, potatoes, and carrots.
Put the garlic and onions on top. Pour in the beef broth and wine in the Instant Pot.
Put your roast back into the Instant Pot on top of the vegetables.
Pour in the A1 sauce and then put your roast in there.
Turn your Instant Pot onto "Manual" and then turn on the timer for 55 minutes.
Allow for the Instant Pot to naturally release when the timer is up. It could take about 20 minutes for that process to complete.
That is all you need to do to enjoy this amazing pot roast in the Instant Pot.