1. Click on the Finance module
2. Click on Invoices
3. Click on Invoice Subscriptions
4. Select the client(s) to invoice (multiple invoices possible) using the checkbox(es).
5. Click on Next
6. Choose the renewal date
7. Choose the billing date
8. Click on Next
9. Click on Ok
10. Click on Next
11. Choose the report to send/print
12. Click on Next
13. Click on the email template to send
14. Click on Next
15. Click on print/send as per your choice
16. Click on Quit

The invoice is created.