Is the ability to use ACF Group, to group fields, only available in the pro version of ACF? Or must I do something to enable it in the free version of ACF?
When ACF 5 is released to the WP repo the group field will more than likely not be included, but that’s just a guess based on the fact that the group field is a modification of the repeater field.
However, currently the group field is only available in Pro.