Hi Patricia,
As you noted, the features in Adagio Order Entry for 'Warn if IC quantity below zero' and 'Warn if available below zero' are triggered only when shipping (invoicing) items, and not just when ordering. These work in conjunction with the Inventory option to 'disallow negative quantity'.
I presume that your suggestion would be to only warn the order entry staff that the ordered quantity would put the quantity on hand (at the location) in a negative position, and not actually prevent the person from taking the order from the customer. And that the order entry staff is the quickest person that can pass along purchasing requirements.
Almost anything is possible with software and I can pass the suggestion along to development.
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Regards,
Softrak Tech Support