How Do I Change The Cron Schedule

We have a Cron executed program which runs at certain times of the day.
I need to changes these times.

How do I do this?

To be exact the program that is executed is called daily_charges.jsp

And I have looked under
etc/cron.daily
and I see no call to this program

FYI looking under etc/crontab I see this:

SHELL=/bin/bash
PATH=/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=root
HOME=/

# run-parts
01 * * * * root run-parts /etc/cron.hourly
02 4 * * * root run-parts /etc/cron.daily
22 4 * * 0 root run-parts /etc/cron.weekly
42 4 1 * * root run-parts /etc/cron.monthly

which obviously is the default Linux included Crontab file so this file cannot be the one that runs the daily crons.

how can I find where is the Cron code that daily runs the program:
daily_charges.jsp