Switch Layer in synfig?

With Great thanks to all synfig developers for creating such powerful software.
i am newbie in synfig and i have recently moved form anime studio to synfig.in anime studio there is a layer called Switch layer(but it is more like a group rather than layer) which includes some other layers .main property of those switch layer is that each time only one of them can be visible .which is very handy for key framing different type of eyes and mouth such as angry , happy ,surprised.I was wondering if there is same property in synfig ?

You can use the Paste Canvas Layer for that task. See this mini video tutorial on how to use: