In this use case, several sub-task will be created depending on the frequency of time chosen. A different sub-task will be created for every monthly, quarterly, half-yearly or yearly recurring deadline of a whole year. For example, 12 tickets will be created if the task has 12 recurring deadlines, one for every month of the year, and only 2 if the task has 2 internal deadlines, one for every six months, from the current date.
Create two custom fields to define the frequency and a base date.
Create a Date Picker field and name it Deadline.
Create a Single Select field and name it Frequency.
Add the following options to the field:
Add a Create issue post function to the workflow transition of your choice.
Issues to be created
Choose Multiple issues.
Write an expression using this format with parsing mode in Number.
Choose Current issue
Set the field Deadline
Add a conditional execution to avoid executing the rule with the sub-tasks if they share the workflow with the parent task.