[Observium] Ignore device for alerting and notifications for a timeperiod

Hi, is it possible to activate "Ignore device for alerting and notifications." until a specified time/date? I have tried to activate "Ignore device for alerting and notifications." under "Device settings" and set at time in "Alerts" but that didn't work.

The purpose is to disable notifications when we do planned work.

/Jesper Grahn