I have put a 'Request Invitation' on the homepage. This correctly links to a form to request the invitation. When this is completed an email goes to Admin to inform them of the request. Is there a way of putting a link on this email so that admin can approve a request directly.
As above I asked why the approval link doesn't appear on registration requests. If I turn on 'Allow user registration' in the Joomla settings then the 'Request invitation' form is no longer available. Try it, you'll see.