Ti run important and regular tasks, N99panel uses several entries in the system cron, which is run as the root user.

But if you wish to add or use your entries also, then can place those entries in the file /etc/custom_cron

And thereafter run the following command as the root user

/var/n99p/resources/other-cmds/setupcron.sx

If any entry placed in /etc/custom_cron has invalid syntax, the file /etc/custom_cron in that case would be ignored