is there a way to have a different liability account every time i make a bill

my concern is, we have different liability accounts, under our old system, we can chose any liability account everytime we make a bill and that is defaulted to each vendor, depending on the nature of transactions, ie, a/p-trade, a/p-non trade.. In netsuite, every time we make a bill, it only defaulted to "Accounts Payable" account and that makes all billed expenses not categorized if its trade or non trade which ever the case..any suggestion guys?

:confused