iExpenses - Assigning costs centers at line level

Hi There

I am currently working on an implementaion of iExpenses on R12.   The accounting associated with an expense claim is drawn from the deafult cost center of the user submitting the expense report, and the GL account of the expense type selected on the expense report.   This means that all expenses will be assigned to one cost center (essentially the header level cost center)

Our client has a requirement to be able to submit an expense report for different cost centers on the same expense claim, i.e. the user is able to define a cost center per expense line.