Hi there 👋 ,
You have decided to enable CO2 Alert - great 👏 . You can read more about the feature here: https://www.airthings.com/business/co2-alert
How to enable CO2 Alert:
On your Dashboard, click on Buildings from the navigation menu and choose the building for which you want to activate the alert.
On the upper right side of your page, you will find Options (pen-button ✏️ ), next to the Add (plus-button ➕ ). Click on the Options and select Settings.
On Settings, go to Features and click to activate CO2 Alert.