There are 12 dots on the top above the elevator door. Make all the diagonals add up to 12 to match the dots. The image below is one way to solve the floor:
Tactical, beautiful, and wholly unique, the GOTY-winning sci-fi RTS returns with Homeworld 3. Assume control and battle through fleet combat in dazzling, fully 3D space while the award-winning story unfolds on a galactic scale.