Appointment status message

HI,
My receptionist has ticked the box “Don’t show me this again” so when she updates a patient status (arrived) I get sent a message automatically. I don’t want to get these messages as I can hear when a patient comes in and I can see the colour has changed on the appointment.
Can you tell me how to get the dialogue box back, the one which offers the recepionist the option to let me know the patient status has been updated.
THanks
Steve