When wanting to split commissions on a sales order you need to expand the commissions lines and update each line to the percentage
for them to calculate correctly. So in this example we want the commissions to be divided by 2 Salespersons so they each receives 50%.
The window defaults to 100% for one line so if you add more than one line you need to apply the proper percentage to each salesperson and update
the Percent of Sale field.