Hello,
I am not sure what you are referring to with
dadabik_create_pdf, but this old post explains how to create a custom button that export to PDF using a specific template:
Is there an easy way in DaDaBIK 9.2 Monterosso to create a custom button to generate a pdf based on one of the custom templates?
dadabik.com
in your case, you could create instead a custom PHP page where you set the template according to the group (using the global variable $current_id_group) and then redirect to the PDF page as the post explan.
Best,