I followed this link to change log-rotate configuration for RHEL 6
What should i do after i made the change to the config file?
crontab to work. It's scheduled work, not a daemon, so no need to reload its configuration.
logrotate, it will use your new config file automatically.
If you need to test your config you can also execute
logrotate on your own with the command:
Or as mentioned in comments, identify the refer to slm's answer to have a precise cron.daily explanation
logrotate line in the output of the command
crontab -l and execute the command line