How to add other service purchased a part from repair rabbit to the invoice?

“Invoices ” How to add other service purchased a part from repair rabbit to the invoice?

“New” How to add other service purchased a part from repair rabbit to the invoice?

Add the required details and “add” How to add other service purchased a part from repair rabbit to the invoice?

Add the details in the invoice How to add other service purchased a part from repair rabbit to the invoice?

Click on the (+) sign to add extra items to invoice. How to add other service purchased a part from repair rabbit to the invoice?

“Save” How to add other service purchased a part from repair rabbit to the invoice?

while click on save you will get a message “are you sure to generate an invoice?” How to add other service purchased a part from repair rabbit to the invoice?