[xwiki-users] How do I navigate to the Invitation application?

I apologise for the dumb question, but I've just installed XWiki Enterprise and I want to experiment with sending Invitation emails. The Invitation application is installed and configured. But I can't find the actual invitation page. The documentation for the application suggests adding a link to it on the user profile sheet. But it doesn't say where the link should point to. Related question: is there a way in the wiki to list all the objects of a particular type? I suspect this will help me figure out this and other problems on my own :-) Thanks for any help!