8.5.1. Inserting and Deleting Line Items8.5.2. Invoicing for Billable Time and Costs8.5.2.1. Assigning time and expenses to customers or jobs8.5.2.2. Adding billable time and expenses to invoices8.5.3. Applying Subtotals, Discounts, and Percentage Charges8.5.4. Adding a Message to the Customer8.5.5. Choosing How to Send the Invoice8.5.6. Adding a Memo to Yourself