Cron Expression can be automatically configured if you select the option under Trigger Con field, if you wish to set complex contrab that is not found you can contact us or find more from: http://quartz-scheduler.org/documentation/quartz-1.x/tutorials/crontrigger
Example for Cron Script Trigger:
CronTrigger Example 1 - an expression to create a trigger that simply fires every 5 minutes
"0 0/5 * * * ?"
CronTrigger Example 2 - an expression to create a trigger that fires every 5 minutes, at 10 seconds after the minute (i.e. 10:00:10 am, 10:05:10 am, etc.).
"10 0/5 * * * ?"
CronTrigger Example 3 - an expression to create a trigger that fires at 10:30, 11:30, 12:30, and 13:30, on every Wednesday and Friday.
"0 30 10-13 ? * WED,FRI"
CronTrigger Example 4 - an expression to create a trigger that fires every half hour between the hours of 8 am and 10 am on the 5th and 20th of every month. Note that the trigger will NOT fire at 10:00 am, just at 8:00, 8:30, 9:00 and 9:30
"0 0/30 8-9 5,20 * ?"