1. Click on 'Invoices'
2. Click on 'New Invoice'
3. Add Your Contact Information
4. Click on 'Next Step'
5. Add a Line Item
6. Add the Product/Service Information That Was Performed
7. Click on 'Save'
8. Your Performed Job Will Be Added to the Invoice Draft
9. Click on 'Save & Generate Invoice'
10. Click on 'No, Invoice Only'
11. See Your New Invoice Being Created
12. Click on 'Receive Payment'
13. Add the Performed Payment Details
14. Mark the Payment to Don't Send Receipt as the Job Was Performed Time Ago
This is to don't confuse your costumers leading them to think you charged them again
15. Click on 'Save'
16. Your Payment Will Now Be Added and You Will Have a Paid Invoice
17. This Is How Your Customers Will See Their Invoices In Case You Send the Invoice to Them
