Hi D365 folks.
I am trying to add additional field as a lookup from customer account lookup when creating a new sales order. Currently, when typing something from the customer account field without hitting the arrow for dropdown and it can't find a specific customer account based on the keyword, it will proceed on searching for the customer name.

Now, we need to add a new field so that when the keyword entered can't be found from the customer account and customer name, it should be able to search for another field which in my case, the search name. I already checked everything I think, but no luck. I can't use lookup CoC or event handler since lookup comes first before the modify event. Any who knows how to attain this feature? Which class or form setup to check or customize?