1. How to create a customer contact? 3. How can I filter my contacts? 4. Where and how can I set the payment terms for a customer? 5. Can I have a contact who is both a customer and a supplier? 6. Can I delete a contact? 7. Can you add a new contact using an existing contact name? 9. How do I create a new transaction for a customer? 10. If I modify the address of my contact, will that reflect in the invoices created for this contact? 11. How do I import/export contacts?