The Dashboard is where you can quickly find metrics about your ministry in an easy-to-use way.
It's composed of "cards" that display information & metrics regarding your database. These metrics include the number of people, giving last week, giving this week, worship attendance & more.

To customize the cards on your dashboard, go to Settings Admin Settings Dashboard Setup.

These choices apply to everyone at your church. Each person only sees the items their permissions allow, and each person can arrange the cards in their own order from the Home screen.