Need to make printable documents merged with crm fields

Need to make printable documents merged with crm fields

I´m working around Zoho CRM and make some modifications and modules that fit my organization.

Next week I need to decide if i bought some licences.

But still I can´t know how to create a button that print some documents merged with crm fields. I don´t need to bulk, the button must combine, show and print fields of one registry.

¿Any ideas how?

All ideas are welcome, I lost and at 4 days of trial off.

Thanks.