Designing Multi-Party Channels & App Sessions

[Rajshah1302]

I’m building a trading/game application and have successfully integrated the basic flow (connect to Clearnode WS, wallet connect, EIP-712 session auth, and P2P transfers) as shown in the example: https://github.com/erc7824/nitrolite-example.
I now want to implement a multi-party “gaming lobby” similar to the example described in Yellow docs (multi-party coordination), but I’m unclear on whether i need to open channels and how to open/manage channels and how to model app sessions for lobbies/matches where players join at different times.

Questions

1. Channels for games: Why/when should I open a channel for a lobby/match, and what is the recommended lifecycle (open → updates → close) for multi-party games?
2. Coordinator backend: Do I need a lightweight backend to orchestrate lobbies/channels? If yes, what are the minimal responsibilities (invites, ready signals, channel_open proposals, version tracking, timeouts, persistence of latest signed state)?

If you could provide me any example of a game like chess it would be really helpful
Thankyou!

---