Not enough crew...

[peteuplink]

I've done a search but I can't see the answer. I know it must be on here but I've looked at 10 threads and can't see it... How do you stop the "Not enough crew in X department" message from coming up? It's been aaaages since I last played SH3 and I can't remember. Do you have to rotate the crew yourself every few hours or is it caused by something else?

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And another quick question. What's the most fuel efficient way of getting from a to b? I've been aiming for a low-ish (about 2/3) speed and spend a few hours on the surface and a few hours under to save my diesel.