The Council of Conclusions was the plenary organ of the entire Medina Campaign. Present were the senior commanders of the Imperial Guard and Navy, representative officers of
neighbouring regions and, of course, the inquisitors. <...>The representatives of the Governate and other
political bodies were not invited. It was no place for bureaucrats .
Собственно, вот почему и назвал его пленарным.
Дословно да. Если пленарный не подходит, пусть будет Верховный.
Спасибо за помощь.