How do I create an invoice in numbers that automatically generates the next invoice number when opened?
How do I create an invoice in numbers that automatically generates the next invoice number when opened?
Since you have given no specifics of your setup it is hard to give a meaningful answer to your question.
This video may give you some ideas about how to use Numbers for billing and invoicing:
https://macmost.com/creating-a-billing-and-invoicing-system-in-numbers.html
SG