On any of your Corporation pages click on "TRADE" and a new access point entitled "Order Strategy" is available. It should allow you to set levels at which re-ordering occurs but doesn't work on my setup.
Aha, I see. Even if you access this while you're looking at a corp page, it goes to the interface where you order stuff for your country, not for that corp.
Under 1 second for : "The order strategy for 80 products in your country has been changed." Opera 9.5