Move Function Group Around Under 'Application Logic'

I have added function groups in the tree on the left hand side in the wrong order and it seems you cannot move them around. Operationally it has no effect, but to please the eye ideally I want to have Start/Heartbeat to the top and have slew and boom underneath. I cant seem to find a way of doing it aside from deleting or renaming them and transferring the contents? May be missing something but if not, can we have a feature added to move them around by drag and drop please?