First, a big cheers to the vTiger CRM team. What a great CRM. Unfortunately, the Terms and Conditions won't change for invoices and quotes. Company details and Inventory terms and conditions can be changed in the Settings tab, however this change won't effect the invoice in PDF format on the bottom right for invoices and quotes. The default text remains which can only be used in India: -Unless otherwise agreed in writing by the supplier all invoices are payable within thirty (30) days of the date of invoice, in the currency of the invoice, drawn on a bank based in India or by such other method as is agreed in advance by the Supplier.