Setting ENV Variables in unRAID

Hello, I am trying to setup anonymous authorization to true in unRAID so someone can just view only or sign in if changes needed to be made, however I am not sure how to setup a new variable to define this. I know how to create a variable but not sure what settings to fill in for each field. Any help would be amazing! Thank you

Is this question about Grafana? Can you explain a bit more if that is the case.