Do I need to set-up Cron Jobs?

Setting-up Cron Job

Please check with host administrator for further instructions since this varies from host to host.

If your host does not provide such a service, you can use a free service like EasyCron.com

Invoke Omni-Workflow from Cron

http://websiteUrl/wordPressLink/wp-admin/admin-ajax.php?action=omni_ajax&command=cron