Adding Attention field to the exported PDF

Adding Attention field to the exported PDF

Hello, is there a way to make sure that the Attention to field is in the invoice.  Currently I have to manually go in and add it each time I export an invoice to a client.  Once that is done then I have to go back and change it for the next invoice.  If I only had three customers I could create a template for it and just use that.  But we have many customers and it is very time consuming when I am sending out 20 plus invoices at a time.  Can this be put into a suggestion for future feature that Zoho Invoice has?  It seems like a very logical simple thing that could be done.  Please advise.