Separate the speakers as a stereo pair by following the instructions in this article:

https://support.sonos.com/en-us/article/separate-a-stereo-pair
 

Then group them in the Sonos app and they will each play as individual stereo speakers rather than a stereo pair.

Thanks for that. It’s a part solution but I cannot find a way to “Group” the speakers. 
The two Era100’s now show as separate speakers in the app. They have the same name and when I play Apple Music they show as two individual speakers with the same name. I can click on both of them to make them play in sync so archived the goal, almost. Any thought as to what I missed?

They should have different names, such as Lounge and Diner. It’s easy to rename them: Settings/System/roomname/Room and then type anything you want. Then you can group them. You’ll see one volume control for the group (increasing/decreasing both speakers’ volumes by the same amount) but tap on it and individual controls come up so you can increase the level at one speaker only. 

Thanks I’ll try that.