Anyone using Google Meet for Web can enable the feature and there is no admin control as such for the auto-brightness feature. It is available for desktop users and even iOS users who use Google Meet for Web via their iPhones. The feature is said to be available for all Google Workspace customers, as well as G Suite Basic and Business customers.
In order to enable it, people can head to the More section on Google Meet, tap on the Settings options, select the Video, and finally enable the Adjust video lighting option.
However, the tech giant has warned that the feature can take a toll on the speed of the computer or the laptop. Hence, people can easily disable the feature if they do not want their PCs to turn slow.