Repeating events
Saying it repeats
every day,every week,every month,every yearevery monday,every fridayevery weekday— Monday through Fridayevery 2 weeks,every 3 days— any intervalfirst Monday of the month,every 2nd Tuesday— ordinals
Standup every weekday at 9:30am
Board meeting every 2nd Tuesday at 10am
Pay rent every month
That last one has no clock time, so it is a repeating task rather than a calendar event — usually what you want for a monthly chore.
Making it stop
With no end, a repeat runs forever. Add
until <date> or for <n> times.
Standup every weekday at 9:30am until August 14
Standup every weekday at 9:30am for 6 times
The until date is included — the last standup above is on August 14 itself, not the day before. This is the reading people expect from the English word, and it is worth stating because calendar standards disagree with each other on the point.
Changing one occurrence
Repeating events are stored in your real calendar, so editing them behaves exactly as it does in Apple Calendar: opening one occurrence asks whether you mean this event only or all future ones. Chrona does not invent a second, competing notion of a repeat.