I have the same issue. I added a SmartPower outlet, but after adding it there is no Lights/Switches group on the dashboard. It appears in the Things view, and I can control it, but there is no Lights/Switches group. How do I create one, and then add this outlet to the group?
I just went through this with a few motion sensors. The option for a Smartapp is offered at initial setup of the motion sensor, but not quite as intuitive to find when adding on afterwards. Look under “Actions” , “Lighting”, then find the “Turn on when there is motion” smartapp.
Configuring / Editing can be performed from the “Things” tile by selecting the gear, then smartapp as mentioned above.
There’s a little more to it than that. There is an option under hello home actions to control a light from a motion sensor, but you have to also be changing the mode or the option doesn’t even appear. However, the good thing is that from a hello home action, you can control events for devices from different device classes all off the same motion sensor trigger. See:
And this topic lists some of the differences between using a shortcut group or using a hello home action: