Add in Virtualmin → Scheduled Cron Jobs, every 5-15 minutes:
wget -q -O /dev/null "https://demo.cloudwizard.eu/CW/FlowEngine/cron.php?key=********" >/dev/null 2>&1
php /home/cloudwizard/domains/demo.cloudwizard.eu/public_html/CW/FlowEngine/cron.php >/dev/null 2>&1
A dedicated key protects the URL option — not needed for Option B, since running it requires server shell access already.