"Waves" are the different emotions that you can select from when communicating with their assigned responder. This allows your responder to understand the "waves" of the conversation and have more clarity of how to best assist you.
It is encouraged you updates your waves regularly.
This is because on the Wavely Dashboard for your school, Network Admin(s) can then see the top 5 waves in your school in real time. This allows administration to develop knowledge of the wellness of your student body in real time and acquire the insight needed to establish best practices for students.