Select one of the following options:
Happens every day - If you select this option, the timer fires every day. When you select this option, the Cron expression in the Schedule field shows the asterisk character (*) for this field.
Happens on the last day of the month -- The timer fires only on the last day of the calendar month. For example, January 31, March 31, September 30, and so on. When you select this option, this field in the Cron expression shows the letter "L". For example, if you want a timer to fire on the last day of the month every three months, you would select this option for Days of Month and then select every 3 months starting in January for the Months field. The Cron expression for these two fields would be "L 1/3". In addition, you would need to select "Happens on an unspecified day based on Days of Month setting" (rendered as a question mark in the Cron expression).
Happens on the last weekday of the month -- The timer fires on the last day of the month that falls on a weekday. Weekdays are Monday (2), Tuesday (3), Wednesday (4), Thursday (5), and Friday (6). When you specify this option, you need to change Days of Week to "Happens on an unspecified day based on Days of Month setting" (rendered as a question mark in the Cron expression). Suppose you want the timer to fire on the last weekday of every month. You would select this option and then keep the default setting for Months (every month). The last three fields of the Cron expression would show "L * ?", where "L" is the last weekday of the month, "*" indicates every month, and "?" indicates an unspecified day, based on the Days of Month setting.
Happens on the nearest weekday to day [15} of the month --Specify which day of the month to use for the timer. The default value for this option is day 15, so the timer would fire on the weekday that is closest to the 15th of the month. If day 15 falls on a weekday, then the timer fires on that day. If the day 15 falls on a Saturday, then the trigger fires on Friday (day 14). If day 15 falls on Sunday, the timer fires on Monday (day 16).
Happens every [1] days -- Specify the interval of days that the timer will wait before firing again. The default value for this option is 1 day, so the timer would fire every day of the month.
Happens from day [1] to [31] -- Specify a range of days during which the timer will fire. The default value for this option (1 to 31) specifies that the timer will fire every day of every month.
Happens every [6] days, starting at day [1] -- Specify the interval that the timer will wait before it fires again and the starting day of the month for the interval. The default value for this option starts the timer on day 1 of the month, and then the timer occurs every six days throughout the month.
Happens on an unspecified day based on Days of Week setting -- This option causes the timer to fire on any day, using the Days of Week setting. For example, if you selected "Happens every Wednesday" for Days of Week, the timer fires every Wednesday. When you select this option, this field in the Cron expression shows a question mark, "?".
Other expression - This field allows you to use Cron format to type a time expression for Days of Month. In addition, when you re-open this dialog box after making a selection, this field shows the Cron format for your previous selection.
When ready, click OK to save your selection and return to configuring the Schedule.