Press the saute button on your Insta-Pot and add the olive oil. Brown the roast on all sides in the oil. Turn off the saute function.
Add in all of the vegetables.
In a large bowl, whisk together the Worcestershire sauce, beer, soup and soup mix package until combined.
Pour over the roast.
Press your Meat/Stew button and cook at high pressure for 120 minutes.
You can manually release the steam or let it naturally release. With a roast like this the extra time won't hurt it with the natural release.
Take 2-3 cups of the sauce and place it in a saucepan. Bring it to a boil and reduce for 5-6 minutes.
Whisk together 1 tbsp of cornstarch with 1/4 cup water. Whisk into the boiling sauce and cook until it thickens.
Shred the roast beef and serve with gravy.