Sending Invitation 

Create a page, limiting access to this page to front end user groups who will be authorized to send invitations to register. Insert the Agency Registration plugin, setting the display mode to 'Invite' and the Starting Point to the System Folder that will contain the front end user records created. When an account is created through this page, an invitation message will be sent to the email address specified on the account. The invited person may accept or decline the invitation