Is there a way to mark an invoice to a Job as "Not Billable" as you're entering it in Payable Invoices/Credits?

SOLVED

Currently, I pull up the Job Costs entry for the invoice right after entering the invoice into Payable Invoices/Credits to make the change, but that's cumbersome and easy to miss if I'm busy. Has anyone found a way to mark a cost Not Billable as the cost is being entered?