In the left navigation pane, click Client Management or Portfolio Management.
In the left-hand column, click Billing. The Billing grid opens.
Select the billing you want to edit by checking the box to the left of the client name/item type.
From the Action menu, click Edit. The Billing dialog opens.
Enter the changes in the appropriate billing fields.
Click Save + Close. You are returned to the Billings grid and the changes are made.