Project Costing Details (within the Billing Section on Requisitions & Purchase Order Pages) "Expendi

I'm looking to see if the Expenditure Organization field list of values can be updated to show Scottish Water Business Unit at the top of the list of values as standard. This is the most common entry used within SW and has to be searched for or typed in directly to the field. Since introducing Direct Purchasing users to the application this is a common complaint and is leading to errors in requisition creation. I have attached some screenshots to explain what I'm looking for.