You may obtain this quest from either Preston Garvey, listening to Radio Freedom or by coming upon the Settlement on your own.
- Talk to the settlers at (a random settlement location)
- Kill the Ghouls in (a location)
- Report your succcess to settlers at (the settlement)
- Talk to Preston Garvey
- Various Settlements
Travel to the settlement in need of help and speak with the settlers. They will inform you of the location of a settlement infested with Feral Ghouls. Travel to the location and eliminate the Ghouls threat. Return to the original settlement and speak with the settlers to tell them the threat is gone and then report to Preston Garvey. You will now have gained access to the Workshop at the new settlement.