How to set reminder for booked appointment

Good day guys.
I need help to set reminder alert for booked appointments on erpnext so that an employee will be reminded when is 30minutes to appointment time via email or slack
thank you

Hi @lubem!

You shall setup notifications in ERPNext to send alerts.
Select the Appointment as doctype in the Document Type field
Link to the Documentation

Thank you. I have the Notification but criteria to send alerts based on Minutes before or after. what is there is Days Before or After.
I want the notification alert to be sent 30minutes before

did u find a fix buddy ?

no sir i have not fix it?