If your daughters and sons have different schools and the Calltech system is activated in them, the Calltech provides the ability to call after logging in through the Nida app. The names of your daughters and sons added by their school administration will appear in the main tab and under each name of your daughter/son the school that belongs to him.
⚠Note: If you are a driver, you can also call as long as you are authorized by one of the parents.