In this tutorial, developers learn how to set up multiple Agora channels in a Unity 2019.4.1 (LTS) environment. The project demonstrates joining multiple Agora channels via AgoraChannel objects and highlights the intricacies of joining multiple channels while publishing your stream to one allowed channel. The tutorial covers getting started with Agora, UI setup, creating an Agora engine script, setting up a channel panel script, initializing video surfaces management, defining callbacks, button functionality, prefab setup, token creation, and testing the project.