Rename Groups ?

Hi guys,

Anybody knows if / how to rename a group ?

For example I add some lights to a room. Now I wanna try some other lamps, so I group the old ones and hide them, then add new lamps.

Now if I wanna compare with the older lamps I grouped, good luck trying to find them in the list of generic named hidden groups :(

is there a way to rename a group ? Not talking about groups added to favourites because you need to reposition these each time you want them back. Just simple groups ...

Please