The Void H only has Zebuxoruk in it and he only offers the first Neriak Partisan Quest, he is also involved in some Hails on various other quests in the Expansion.
The #'s on the map(s) show the areas where the first few steps in each task takes place (Same #'s take place in the same area, if no # is present it is an instance, takes place outside of the zone, or can be done throughout the entire zone)
Tasks go in - order, if an | exists it means you can do those in any order, but have to all be done to continue on to the end. If tasks aren't listed in a chain, they can be done at any time.
Progression Quest Chain: Overcoming the Cataclysm - Not of This World - Answering the Call - The Bixies of War | For the Sake of the Forsaken - The Missing Scroll - Fourth Gate Investigation - Cautious Recruitment
Mission Quest Chain: The Missing Scroll - Fourth Gate Investigation - Cautious Recruitment - Houses of Thex - Hate Rising
Mission Quest Chain: The Doomscale Horde - The Defense of Lendiniara | Xulous Prime - The Legacy of Bayle | Saving Jacyll | Houses of Thex - Hate Rising | The Fall of Lord Bayle | Burn Out - A Guide Beyond the Rift - The Journey Home
The Missing Scroll
The Journey Home