Looking for help as to how to set the correct filters and triggers in Automation module to email an invoice to the invoice partner, once the invoice is validated.  I have an email template set up. Would value some screenshots to show how this is done?

A comment - this happened by default in my Odoo V12 but has disappeared since the upgrade to V13, and Odoo seems to have dropped the nomenclature 'Invoice' in favour of 'Accounting Entry' which whilst not incorrect, does not make filtering very easy in this regard.