Supports 5 scheduling types:
- Weekday - Monday/Tuesday... every N weeks (supports multiple).
- Weekday (Monthly) - First Monday every N months.
- Specific Day (Monthly) - 1st, 2nd, 3rd, ... every N months (supports multiple).
- Weekday (Yearly) - First Monday in January every N years.
- Specific Day (Yearly) - January 23rd every N years.