This is a special parley. Talk to NPC to begin. This parley is to spawn a director in order to begin Writs quests. In order to spawn the Directors in the Antechamber of the Sun, you must Parley with the Ambassadors, and Couriers that you find there. After a successful Parley, they will run off, and another NPC will return in their place. There is a random chance that the returning NPC will be one of the Directors who you can then Parley to get a writ. See Writs where the names of the Directors are given and the Writs they start.