It starts with people.
The human resources subsystem is an Operations Working Groups, meaning it has no special on-chain features being what basic working group features exist, described in Working Groups. The best way to understand what substantively goes on in this group is therefore to consult the testnet scoring rules for this group, described here Broken link.
The community maintains a distinct Notion space which holds more dynamic information on the activities of the HR working group.
A worker in the HR working group.
The lead in the HT working group.