Add events functionality to a especific Group

Is it possible to add the events functionality to work for only a particular Group.

The idea is to have the possibility to plan event for a group in particular.

Of course possible .. at expertzzz site even are such mods ..

But ok, you can do it self too.

You just need to add buttons to add events for group.

After create some place and push here events block, use classes of groups and event