In this tab you will be able to see all the project expenses (costs) registered on your projects. From this tab you will also be able to edit and register new expenses. On the right side you will be able to see the tab's own report filtering options such as billable and approval status.
In the example below we'll show you how to register a new expense:
Project expenses, much like hours, must be set to accepted and be checked as billable in order to show up in to be invoiced.
There is also an option to batch change the status on expenses from to be included in total price to not included.