Salesperson set customer level
Wholesale businesses use a specific salesperson for each customer. Each customer's salesperson is used every order and every re-order that the customer places whether the order is placed with the salesperson themselves, by fax, placed customer service or even if it is placed with a different salesperson.
Because of this, when creating a new customer record, we need to be able to set the salesperson in that customer record and then each time a new order or invoice for that customer is created the new order will set to the default Salesperson which was setup in the Customer record.
This is critical for ALL wholesale businesses and if you look on community help systems of competing products there is much talk about this important need when it is missing.