CentOS Instructions
Login as root ->
[root@ip-8-8-8-8 ~]# crontab -e
Add into crontab -e the followings (I think it is easier to be understood):
*/5 * * * * /usr/bin/php /var/www/html/yourdomain.com/public_html/index.php -p cron -t minutely
0 * * * * /usr/bin/php /var/www/html/yourdomain.com/public_html/index.php -p cron -t hourly
0 0 * * * /usr/bin/php /var/www/html/yourdomain.com/public_html/index.php -p cron -t daily
0 0 * * 0 /usr/bin/php /var/www/html/yourdomain.com/public_html/index.php -p cron -t weekly
0 0 1 * * /usr/bin/php /var/www/html/yourdomain.com/public_html/index.php -p cron -t monthly
#0 0 1 1 * /usr/bin/php /var/www/html/yourdomain.com/public_html/index.php -p cron -t yearly
If for example you only need the crontab to run daily, comment the otther lines with # in front as I did for the yearly.
It will run from 5 to 5 mins, 12:05, 12:10, 12:15 and so on... from hour to hour 12:00, 13:00, 14:00... so please allow 5 minutes, 1 hour, 1 day, to see the changes in Back-office -> Settings -> General, as in the image attached.
Thank you,