I cannot seem to get field_group to nest beyond one level.
I have a a horizontal tab group 'Outer' and inside is a horizontal tab 'Info'. I cannot get the individual fields to nest within 'Info'. They will not drag into place. I do not know if it is a UI glitch, or something deeper. Anyway, I cannot arrange my forms as I'd like.
Any help would be appreciated.
It could be that you need the Javascript that is included within Seven. If your theme is a subtheme of seven it would be included but if custom, it maybe that you need to copy that and include in the same way.