I'm using numbers to create my invoices. Using sheets/tables to create the Customer information section 2 columns and a few rows for their Name, Address, Email, Etc Then I use the invoice table chart to put their products and a service charge on there as well. It works out perfectly...however I just noticed that when I export as PDF to email my customers their invoice/receipt the PDF lines are completely editable. Giving me a very uneasy feeling should a customer want to make adjustments and cause a concern over something that they changed on the invoice. So it is possible to lock those fields when exporting as a PDF or is it just by default that way? Thanks!