Are emergency notifications just for users who can authenticate (students, faculty, staff), or can anyone sign up for emergency notifications, like parents, caregivers, etc.?
We can do this either way:
1) Only people in your system (e.g., at www.occc.edu/can) who have enabled only the "Sign In via LDAP" option.
2) People in your system and others not in your system, like parents or high school students taking college courses. For example, https://demo.regroup.com/networks/demo/embed_login_register.