Table etiquette is a vital part of any civilization, no matter how advanced. On a spaceship or in a space station, it's crucial to follow the rules to avoid intergalactic incidents.
The center chair is not just any chair. It's the seat of honor, where the most senior member of the table takes their seat.
When in doubt, look for the chair with the flashing red light. That's the center chair, and you should not sit there unless explicitly invited.
Learn more about the Seat of Honor