Invoices - Mark as Paid:
"Management Module"
To view a summary of the your invoices select the 'Mark Invoices Paid' item
in the 'Invoicing' menu. This will open a form displaying the status of all
invoice details (whether invoices you have created or summary details entered
from other packages).
To mark an invoice as paid or as a bad debt 'double-click' the relevant line
and enter the date paid or tick the 'Bad Debt?' box.

To modify the view on this form select the desired 'View
Option' from the drop-down list, set the 'Sort Order' based on the relevant file
and chose if you would prefer the list to be displayed in ascending or
descending order.