- Go to Income/Customer Invoice.
- click at the Create New Invoice button

- select the customer and click submit.

- fill in the detail and click submit

- select product and click submit

- fill in the details and click submit

- select another product to submit if you wish, else click at the Close Button

- tips and tricks: use the tab to go to the next field, shift+tab to go back to the previous field. at any input box field, press the [Enter] or [Return] key to submit.
- How to create customer?
- How to create product?
