Editing a field in a Page List rather then opening the card

Hi there

How would I develop a change to the posted sales shipments list that would allow the user to adjust one field instead of clicking into the line and opening the card to edit the field. The field that we wish to be editable in the list view is the Shipping agent code.

This would allow the user to go through the list quickly and assign a shipping agent rather then clicking into each order.


Any help, would be appreciated.