Exclude Overheads for non-Standard Work Orders

Hello,

Client is using Standard Costing, and uses both Standard (Process) and Transform (Discrete) Work Orders.

We have Overhead defined based on the output item within the Cost Scenario (Overhead Rate Type is Plant Overhead).

Is there a way to exclude Overheads from being added to non-Standard Work Orders (like Transform)?

I did not find any option within the Manage Accounting Overhead Rules.

Thank you,

TS.