If you use multiple locations, you enter information specific to an item at a particular location in this dialog box. This includes much of the information you enter in the Item Master dialog box, and the Cost/Usage tab in single location companies. If you are using multiple inventory location, you see this dialog box after saving the cost/usage information:

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If you chose to assign the item to a location, or if you select Maintain/Inventory Items/Item at Location, you see the Item at Location Maintenance dialog box:

This dialog box contains information about the item at an assigned location, including the cost, default supplier, on-hand and allocated quantities, usage history, and general ledger account numbers. Enter the code of the location you want to add for the item.
You will now have to fill in the following fields and tabs in the Item at Location Maintenance dialog box: