Yes. After combining devices into an Activity, go to the Features section in the app and create a macro and assign it to the Activity. You can set up a macro that sends Power (or Power On if available in “Discrete Keys”) to each device you want to turn on. Then you can insert a pause of a few seconds to give the devices time to power up, and select the input if necessary. When you select the Activity on the screen of the remote, this macro will be sent and the devices will turn on. And when you want to turn them all off, simply hold down the Power key on the remote and an automatic Power Off macro will be sent.
