Hi Dear
How do i customize the Invoices, Quotes and others, will you able to do it for me with an additional cost
@mosaleem94, please do not divert topics with unrelated questions. This one had nothing to do with VAT updates. It has been moved to a new topic.
To customize transaction forms, use a custom theme. See Change the look of forms with themes | Manager. If you do not have the skills yourself, hire a local programmer.