The main job is to help the president. Each of them know something different so that means that they help and give the president advice and information.
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https://www.battlefields.org/learn/articles/naval-actions-civil-war
The Olmec, Mayan, Incan, and Aztec civilizations are some of the greatest ancient civilizations in history, and yet we know very little about them compared to other parts of the world. The Olmecs are frequently forgotten entirely, and the rest are often lumped together or confused, but they were all completely distinct. In short, the Maya came first, and settled in modern-day Mexico. Next came the Olmecs, who also settled Mexico. They didn’t build any major cities, but they were widespread and prosperous. They were followed by the Inca in modern-day Peru, and finally the Aztecs, also in modern-day Mexico.
Hopefully this answers your question if it doesn’t and I just overlooked it lmk.