How do I have new subscribers sign up to a specific group in enewsletter?

How do I have new subscribers sign up to a specific group in enewsletter?

I was given this short code by support, but it only signs them up to the general list. Which is not what I want on this occasion:

[enewsletter_subscribe show_name="1" show_groups="0" subscribe_to_groups="1,5"]

How do I edit this short code so that they will subscribe to just the group called Free Talk SFW?

Thank you