Concatenated digits 1-7 where 1=Monday, 7=Sunday. Example: '12345' for Mon-Fri
Repeat interval — e.g. 2 means every 2 weeks.
Repeats on selected days of the week.
Fields: frequency, daysOfTheWeek, end.
Concatenated digits 1-7 where 1=Monday, 7=Sunday. Example: '12345' for Mon-Fri