The elipse button to the right of the completion date field
is enabled when the New schedule line check box is checked,
the copy radio button has been selected and 'sales' amount
types have been selected. Clicking on this button populates a
grid with all the relevant customer orders (including closed orders)
dependant on the parameters selected. These orders may then be
selected and added as schedule lines. Only customer order lines with
a key matching the order entity above, with the exception
of the completion date, will be displayed and
be available for linking.