2x2 Headquarters

The 2x2 hierarchy is topped by regional overseers. For example, Harold Bennett is currently the "overseer" of Oregon and has his headquarters at:

Questions about their headquarters:

1. Who manages all the workers? (overseers)
2. Where does this person live? (overseer lives in houses of rich followers)
3. Does this person have a mailing address? (yes, it's on the "workers list" made by overseer)
4. So where is their headquarters? (they will claim no headquarters though it's posted on the list)