Widget display to certain usergroups only

[Ninos]

I have searched but I cannot seem to find the mod I am looking for.

At the moment, if a widget is created it is displayed to every usergroup. You cannot change this. I want to be able to restrict the widget to certain usergroups (in my case: [if guest] display widget [if not] do not display widget)

Surely this is a simple thing to do? Isn't there some code I can add somewhere?? Can anyone give me advice/the correct code on how to do this?

All help greatly appreciated! Thanks!