Perhaps something like Discord, where there are dedicated chat-rooms/channels?
https://www.wikihow.com/Talk-in-Discord
https://discord.com/blog/voice-chat-now-available-on-discord-mobile-apps
IDK
Should Lemmy Consider Implementing a Voice Chat Feature? Exploring the Pros, Cons, and Implications for a Federated Platform
FEATURE SUGGESTION: “Migrate Subreddits” Tool for Jerboa Users, inspired by Voyager for Lemmy
Discussion: Should Lemmy Implement Restricted and Private Community Options?
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