When a new user has been granted access to a BoviSync herd, an automated email should be sent to the new user.   The email would contain a welcome message as well as a direct link to login to the herd. 

This KB should also be included: https://support.bovisync.com/portal/en/kb/articles/logging-into-a-bovsync-herd-and-switching-herds-once-logged-in