Adjusted Forecast based on Custom measure in Demand Plan Help on Expression

Summary:

Client wants to see the Global Forecast and it seems it is not possible in Oracle Cloud Demand Management. To overcome this, Clients want to do the below for two Organization, out of the Many Organization they have.

Custom Measure 1 -- Org 1 Forecast = Org 1 Sales Order Demand

Custom Measure 2 -- Org 2 Forecast = Org 2 Forecast - Org 1 Forecast (Difference between the forecast in two different organizations where as the Time/Product Would remain the same)

We are creating a Custom Measure to derive the above Values.

1) Expression for Custom 1 Measure 1 is straightforward, but we want this to Happen only for Org 1. How to restrict.