Could lemmy be used as a private self hosted forum?
And could lemmy be used as a private forum were only registered users and whitelisted users can view, post and comment on the instance. This way you can have a private instance which only paid users of your group or club can join like many membership website forums have.
Also through the API, just block the register endpoint so users cant register themselves. And you’d have to block registration over websocket, not sure how that works.