I have groups setup in Alexa per the instructions. Currently though it seems like it just plays to whatever speaker or group was last controlled instead of the specified group. Alexa says it is saying what I said to do, but doesn’t actually play to the expanded or reduced set of speakers, just changes what some speaker/group is playing.
My understanding is that regrouping speakers isn’t supported with Alexa, but that playing TO a group is supposed to be.