Assign manual cost center in Sales Order

Hi,

Is there a way to assign a cost center manually when I create a sales order in t-code VA01? If this is possible, how do I do it?

Overview of my situation:

The G/L accounts associated with the sales order depends on what service is sold. Therefore, it is possible to have postings to multiple G/L accounts within one sales order. Our cost centers are the sales employees of our company, and I must assign each line item to a specific cost center/revenue account to give credit to that employee. Any employee can sell any service, so setting a default cost center would not work.

Do I need to re-structure my cost center standard hierarchy, or is there a way to enter in the cost center manually with every sales order created?