Thanks very much for the reply Simon. Much appreciated. I will use this info to work around what I want.
I am new to this, but am keen to grow our community quickly through invites from existing members, which I would have liked to have been pre-approved.
I would also have liked to have had the option that non-invited members would need to be approved by moderators.
It would seem to be a sensible way to grow a community, whilst trying to maintain its integrity.
Perhaps I could suggest this as a possible improvement for a future Discourse upgrade.
Thank you.