Set the alert's trigger behaviour to Only once when criteria is first met, and set the Duration (time frame) to 1 day with Occurrences set to 1.
With this combination, the first time a student meets the alert criteria on a given day, one alert is sent. Any further matches for that same student and criteria on that same day are suppressed. A new alert can fire again the next day if the criteria is met again — the suppression resets with each new Duration window, it is not a one-time-ever alert.
🧭 Navigate : Location > Attendance > Attendance Settings > Alerts Settings
Full configuration details, including how cohort, roll codes, and recipients are set: Attendance Concern (Alerts) Settings.
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