Is it possible to use both Employee Piece Rate and Item Piece Rate concurrently on Time Entry?

We have employees paid a day rate based on F060146 , but they can also receive an Item Rate based on F06918 depending on what they work on. When both the Day Rate and the Item Pay are entered on the same time entry, the Item picks up the Employee Piece Rate (and not the Item Rate). We assume this is because the Time Entry MBF Processing Options P050002A are set to E = Retrieve piece rate fro mthe Employee Master table.

Does anyone know if it is possible to pay both Employee Piece Rate and Item Piece Rate on same time entry? If so, how should we set up the Time Entry Processing Options etc.?