To set options for Operations lists, you must have the Operations Lists Settings Module Right, under Setup in the Operations module.
On the Operations menu 
, under Setup, click Operations Lists Settings.
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For the Bunker Requirement List, enter the following information:
Bunker Warning Days: The number of days before the bunkering Window From when requirements turn yellow.
Bunker Alert Days: The number of days before the bunkering Window From when requirements turn red.