Multiple communities on discourse?

[merefield (Robert)]

You can create invite links that will add users to a specific group upon redemption:

(Superseded) Multiple Use Invite Links

This content is now covered in Configure how users can create and send invites for others to join your community We have improved the core invite system in Discourse 2.5 to add a new feature – Invite Links. Invite Links can be used multiple times and is not tied to an email. Only staff users (admins and moderators) can create multiple use invite links. Creating Invite Link Invite links can be created from /my/invited page by clicking on + Send Invite button → “M…

Both @pfaffman and I have third party extensions that will set a category ‘homepage’ depending on group membership.

See Custom Homepage for Groups and User-specific Discourse home page - #4 by merefield