Pour 1-2 Tablespoons of olive oil in the bottom of your Instant Pot and turn on the "saute" feature. Saute your roast on all sides for 2-3 minutes on each side, or until browned.
In a bowl, mix together all three packets and 1 cup of beef broth.
Pour broth mixture into your Instant Pot over your roast and seal the lid. Set pot to HIGH pressure. Set your knob to sealing and the timer to 60 minutes.
Let your roast come to pressure and cook for 60 minutes. Then do a natural release for 10 minutes, followed by a quick release.
Remove your roast and slice or shred with forks.
Notes
If you have a lot of fat on the outside you could trim it off. Ours didn't have a lot. You can really use any cut of roast beef. We will often buy what is on sale.