To access Domain Templates, from the domain level, click on Advanced and Customize
From this page, you can use the drop-down fields to choose the type of template and page you want to customize:
Admin Domain pages
Phone PnP templates
Once you have chosen the page, the HTML code will appear in the field below.
For more information on editing, see https://vodia.document360.io/v1/docs/appearance.
Once editing is complete, click Save and your changes will be applied.