Footer for Inventory templates

Footer for Inventory templates

Are there any plans for adding the ability to put a header or a footer into the inventory templates? Or to create margins so that we can add our own header after it is converted to a pdf. The problem we are having is some of our inventory templates have multiple lines of product so that the content will go to the very edge of the page. I have tried to fix this issue using html but have had no luck so far. 

If anyone knows of a work around or code that will work please let me know.