buzzmkt on "Contact form 7 prefilled"

hello,
we have a website with Wordpress and we would like to publish "business courses".
For subscribe the course the visitors fill our "contact form 7 form".
Now we need to reach this target:
- once a potential client clicks on the button "subscribe to course" we would like that the link on button fills some details to the form (date and titlee of course).
How to set up this options? THks fr your kindly support.