I have read that a "permanent group" can be achieved through "Bonding" a group.
The article below instructs on what bonding is, but offers no clues on how to achieve. I cannot find a simple explanation for how to turn on bonding, only posts regarding problems with already bonded devices.
https://sonos.custhelp.com/app/answers/detail/a_id/1966/~/grouping,-pairing,-and-bonding-players
This topic has been closed for further comments. You can use the search bar to find a similar topic, or create a new one by clicking Create Topic at the top of the page.
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.