https://www.afterdawn.com/news/article.cfm/2013/10/24/xbox_one_party_chat_will_support_8_users_at_launch
Xbox One Party Chat will support 8 users at launch - AfterDawn
Microsoft has confirmed that 8 users can use Party Chat on Xbox One at launch.
xbox one party8 userschat
https://www.gadgets360.com/games/features/how-to-start-an-xbox-one-party-752260
How to Start an Xbox One Party | Gadgets 360
Oct 14, 2015 - Three ways for you to get a party started on the Xbox One. Here's what you need to know.
how to startxbox one partygadgets360