On the DAG page, you will be able to select any of the configured DAG's and observe all of their information in the lower pane.
These Tabs include:
Activation Preferences: This list shows the name of each Database, and their corresponding primary and secondary Activation Preferences.
Members: This tab will show all of the current members of a DAG, and their individual statuses.
Databases: This list shows all of the Databases that are included in the DAG, and in-depth information about each one.
Database Status: This list shows the status of every Database in the DAG.