To create new invoice go to Sales -> Invoices and click on the button Create new invoice Select Customer, when selec...

Items is Cassava feature that will allow you to create predefined items which will speed up the process when creating new invoices/estimates/proposals. Create new item...

While viewing the invoice from the admin area click on the + Payment button to record a new invoice payment, after you click on the button new view will be shown including the record payment form. Keep in mind that the ...