We would like to change the layout of the Invoice, Purchase Order and Quote. 

I am going ok starting with the blank form and have the upper part of the invoice complete (not perfect but all the information is in) 

the problem i have is putting in the invoices line items. when i select a data table i cannot figure out how to populate it with the invoices details. does anyone know what this field is? 

when i looked over the existent invoice (the default one of odoo) the fields used there are not available for me to input into my custom invoice. 

any suggestions would be greatly appreciated. 

thanks 

katrina