I want to be able to create an Automation that changes the due date of a task when it is completed according to a dynamic set of rules. This should include the option to choose a consistent (set of) calendar month day(s) to set the new date to, and the option to have it set the due date to the next Monday if the calendar day specified is a weekend.
My aim is to have the new due date be the next earliest of either 15th or 30th calendar day of a month, or the next working day if those dates fall on weekends. The current relative date feature is not smart enough to be able to automate this.