How to nest Field Collections in Drupal 8?
I have Field Collection installed and working fine. What I want to achieve is that for example, I'll have a box on the front end which may contain 6 tabs of content, or two boxes each containing 3 tabs.
First part is working: I have a 'tabs' Field Collection with which I can 'add another item' (tab).
For the second option I need a 'box' Field Collection that contains nothing but the 'tabs' Field Collection.