Hi Mike, Chris from Remote Learner here. We're the developers of the Office365 plugins for Microsoft Open Technologies. I'm very glad the install went smoothly. The admin/cron.php file needs to be setup to be executed by the OS your server is running. For example our hosting services all run on RHEL/CentOS distributions and for them you can create a moodle file in the folder /etc/cron.d/ (so /etc/cron.d/moodle) or use crontab. Our setup is a bit more complex but in the simplest form the contents of that file or crontab record would look like the example from this documentation.
*/1 * * * * /usr/bin/php /path/to/moodle/admin/cli/cron.php >/dev/null