The Conjuration Chamber was a space in the Royal Palace of the city of Farrog which the necromancer, Bauchelain, used in his more complex spellcasting - particularly when he was summoning dangerous demons.
The floor of this Chamber was thickly covered with etched pentagrams of various sizes - which left little room to move around between them. Along one wall was a narrow table crowded with items used by Bauchelain in his arcane activities: "...phials, beakers, stoppered urns, small ornate boxes, clay jars, blocks of pigment, brushes and reeds of charcoal." Upon a shelf situated on the wall above this table were tiny captive demons, each contained in its own private prison. On the other side of the room was another shelf - high on the opposite wall - on which "...a dozen cats were lying in solemn observation, tails twitching."
The Indifferent God having escaped captivity from the lowest dungeon of the Royal Palace, Bauchelain, with Emancipor Reese in attendance, retired to the Conjuration Chamber in order to summon up a powerful 'Demon Prince' - Prince Flail Their Limbs - to deal with the god. After conjuring up Prince Flail, the necromancer - still in the Conjuration Chamber with Emancipor - then proceeded to summon up additional, subservient, demons as minions to assist the Demon Prince with overcoming the Indifferent God.