Most configurations on the Chromebooks are managed within the G-Suite domain of the user's account (which is controlled by each school). However, some configurations are managed within the desalesmedia.org G-Suite domain, for example the Wi-Fi configurations.
We would be happy to add this configuration to your Chromebooks. Please send an email to chromebooks@desalesmedia.org with the name of your school, network name (SSID), and pre-shared key (password).