Sometimes you may need to itemize your Expenses so that they can be more accurately reported, once you've started your Expense choose "Itemize Expense".

You can add more than one line item:

Notice that you need to account for the total sum of your expense, so if you've missed something you will see the difference below the amount in red.

If you added a line item and decided you didn't need one, or if you added too many, click "Delete Line Item" in red, and the item is removed from your expense.