The Account Settings section of the web portal gives you general information about your school (and allows you to select a badge template/barcode type) and provides a few important options.
You can also disable emergency/needs help alerts.
Emergency Alerts are messages sent by students using the mobile app while there is an active emergency.
Needs Help Alerts are messages sent by students using the mobile app outside of an active emergency.
By disabling one or the other or both your students will not be able to send messages through the mobile app.