title: How to customise or add a common header and footer to a report in odoo 12?
body: <p>How to customise or add a common header and footer to a report in odoo 12? I have found four types of report layout(background, boxed, clean and standard). But I am not able to add a header and footer. Is there any way to add a common header and footer for all reports in odoo version 12?</p>