I know of two and gave that information to Orion. He was working on a map of the ship when I left him to work on these. Should be done by now.

But if you're curious about the actual locations now, one would be where we had our little party with Ganymede--in the restaurant Jupiter, up on the holo-suite level near where that window anomaly appeared, and the Enviro-dome. The last entryway to the engine room was through a forest simulation and a place like that has the high potential to camouflage something so innocuous as a command console.