One click adding-to and removing-from zone

My setup: Apple TV in the living room; Airport Express in the kitchen. Often I want to play the same stream to both rooms - with iTunes I just check the speakers I want; with Roon I have to create a Group. Then something happens in one of the rooms and I want to cut the sound in there - on iTunes I just deselect that output, but in Roon I have to go and remove the group then select the room I do want.
In other words, it would be nice if you didn’t have to create a Group just to play to more than one output, but could just select and deselect any combination of individual outputs. Like in iTunes :slight_smile: . Thanks for your consideration!