- Track down the overseer.
- Find the Overseer's camp.
- Find the overseer in Flatwoods.
- Register as a Volunteer.
During Wayward Souls, accept the job from Duchess to receive the overseer's holotape. Listen to the holotape and follow the road southwest to Flatwoods. Once there, head into the church to find another holotape to listen to. To conclude the quest, head over to the tavern opposite the church and register as a volunteer with the Responders at one of the registration terminals there.