We can navigate you to the right spot, but there's not a way to edit it in such a way that it won't be overwritten on the next release. However, we are planning to make the default user group for social network registrations to be an option in a future release later this year, so you shouldn't have to make the edit often.
The file to edit is the /components/com_jfbconnect/models/loginregister.php file. Around line 294, you'll see:
$defaultUserGroup = $config->get('new_usertype', 2);Simply update that 2 to whatever group ID you want users to be registered into instead.
I hope that helps, but if you need anything else, just let us know.
Thanks,
Alex
Assign users to fixed user group
