Templates per Contact

Templates per Contact

I was looking at the API for  oauthscope :  ZohoInvoice.contacts.CREATE

In here appears to be the ability to set specific templates per Contact.  Is this true?  If so, more importantly, is there a means of setting these within the UI?  I have been looking and not yet found it?

If the UI answer is no, then please confirm that we might be able to set these by use of the API?

Thanks