iVisit guest invitations
On the top menu bar select Tools/Create invite ... then select from the options;
Click 'Copy URL to clipboard' button then Paste into email or other applications.
When the URL is clicked a 'call_yourname.ivb' will be downloaded to the
Desktop.
Double-clicking this will launch iVisit and log in as your Guest
User.

What else can .ivb do ? Click here for more