This is a standard cPanel host with a custom cPanel interface.
Follow the standard cPanel installation as shown in the arpReach online manual.
Use the standard cPanel cron definition:
php-cli /path/to/your/public_html/a/a.php cli/auto
php-cli /home/mylogin/public_html/a/a.php cli/auto
This host does not allow access to an MTA (mail transport agent) such as Sendmail or Exim, so email systems must be set up as local or remote SMTP.