Allow moving viewlets from manager to manager through manage-viewlets
Moving a viewlet from one viewlet manager to another is a pain in Plone today. This should be possible through the web interface too.
We’re going to solve this (and lots more) with Deco.
Adminjonstahl (Admin, Plone) commented
This is one of the few "missing features" from Glo-worm, IIRC.