First Appointee

From Memory Alpha, the free Star Trek reference.

The First Appointee is the titular head of the Aldean people, leader of their government and the primary decision maker for the civilization.

In 2364, Radue was serving as First Appointee when the decision was made to reveal the existence of Aldea to the Federation and the USS Enterprise-D in order to seek their help with the radiation poisoning being experienced on the planet. (TNG: "When The Bough Breaks")