How do repeating expenses and their reminders work?

In the expense, set Repeats to Weekly, Every 2 weeks, Monthly or Yearly. The expense then says how often it repeats and when it is next.

Our server adds a copy of it overnight on each date it comes due, dated that day, the same as the original. Its History says it was added because the expense repeats. Repeats pause while the group is archived; once it is unarchived, the dates it missed are added, up to 12 a night for each expense.

About a day before each copy is added on its date, everyone who will owe on it is told, with their share, if their Group activity notifications are on. Whoever it is owed to is not told, and copies added late for dates missed while the group was archived come with no reminder. There is no reminder for a date someone skipped, or while it is paused.

If someone a repeating expense names leaves the group, each copy from the next one on is split among the people still in it, by the expense's own split, and Activity says it was split again because they left. Their share goes to the others by the same rule, what they paid is covered by the others who paid, and an exact amount or a receipt line that was only theirs comes off the total. When nobody it names is left to pay it or share it, or its split no longer works without them, no copy is added: it moves on to its next date, Activity says it didn't repeat, and it repeats again once it can be paid and split among the people in the group, with no charge for the dates it skipped.

To leave out one date, open the expense, or Repeating expenses in Account, which lists every expense that repeats in your groups with its next date and amount, and choose Skip next time: that date adds nothing, and the one after it repeats as usual. Pause repeats stops it adding anything until someone chooses Resume repeats, and it then carries on from its next date still to come, never adding the dates it was paused through. If its end date passes while it is paused, it has no dates left to add: it repeats no more, and leaves Repeating expenses. Anyone in the group can do either, and each shows in Activity.

To stop it, edit the original expense and set Repeats to Never. Copies already added stay, and each can be edited or deleted like any expense.