Add beef broth to the pot.
Seal the pot with the lid and switch the machine to pressure cook for 50 minutes. Do a quick release by flipping the seal to release the pressure before removing the lid.
Turn the steam release valve to seal, and cook on high pressure for 50 minutes. Do a quick pressure release by flipping the seal. Allow all pressure to come out before removing the lid.
Add the carrots and potatoes to the pot, nestled around the roast. Reseal the lid and pressure cook for an additional 5 minutes. Do another quick release.
Use two forks to gently shred the meat or separate it into chunks for serving.