For use move file to /etc/cron.d
mv zurmo-cron /etc/cron.d
Execute permission
chmod +x zurmo-cron
Edit file
/etc/cron.d/zurmo-cron
Set variables USER and FOLDER
USER_ZURMO
: CRM the User that will perform the task
USER_SYSTEM
: System the user that will perform the cron
FOLDER
: Folder where you installed the Zurmo