count of order references that are from Ireland/UK and not from Customer1, but also include any null values in Customer Name.
include orders that are not from Customer1 but have a Null value for Global Orders Flag
I have been able to get the first point sorted, however I am not sure what to change/add to the formula to get it to include data that have a null value under Global Orders Flag? I want it to extract data whilst meeting both criteria's.