How to nest a group in another group? (X3)

I’m wondering if there is a way nest a group in another group in Endnote X3. I don’t find the function.

Not an option currently, but there is a suggestion in the other forum to impliment a nesting structure.  Go and support it, via Kudo’s, replying (and quote) or giving it stars?  (probably reply quote has the most impact but the rt other methods of suppocan’t hurt).