Defining recurrence rule
Setup recurrence details
Repeating Issues addon supports recurrence rules as defined in the iCalendar RFC so use can schedule actions that:
occurs at given date and time
repeats daily, monthly, weekly and yearly
repeats every n times
repeats on given day of week
repeats by day of the month or day of the week
repeats 1st or last working day of the month
ends never, after x times, or on given date
Possibilities are vast...
Configuration fields for recurrence
FIeld name  Description 

Repeat every  Define frequency and interval between each frequency iteration. Possible frequency values:
For example, using `Day` frequency and interval equal to 3 means once every three days, but with frequency set to `Month`, it means once every three months. 
Repeat on  Define the weekdays where the weekly recurrence will be applied. This field is only available for frequency equal to `Week`. For example, using `Week` frequency and interval equal to 1, an 'Repeats on' equal to Mo and Fr means recurrence occurs every week on Monday and Friday 
Repeat by  Define the weekday (together with 'Starts on' field) where the monthly recurrence will be applied. This field is only available for frequency equal to `Month`. Possible values:

Starts on  Defines the start date and time relative to which subsequent occurrences are calculated on the recurrence rule 
Ends  Define when the recurrence ends. Possible values:

Calendar  Define calendar with nonworking days that will be used by this recurrence rule. Please read how to Managing nonworking days 