The scenes currently aren't much better then in most HUBs right now
You press the run and it turns everything in the scene on or off dim or brighten(depending how you have it set)
The Difference with scenes in the WM100 is the option for delays between events (some Hubs don't have this)
Also once you start a scene most hubs don't have the option to stop the scene from running.
Since the scenes are so limited in their function I really only have one and that was for Christmas lighting so it doesn't get used and won't now for a while.
The manual gives a couple of examples. Though I live in a small house and usually only need one light on when coming home.
A bed time scene may be useful but I already have Alexa doing that.
As well she does a good morning routine.
Until the scenes become more like macros they really aren't very useful to me.