Steps:

1. Go to Setup
2. Build > Customize > Console > Custom Console Components
3. Click New
4. Input MiniScorecard in 'Name'
5. Input Mini Scorecard in 'Button Name'
6. Select ScorecardMini for the Visualforce Page in 'component'
7. Put in 200 for the width
8. Put in 360 for the height
9. Check the Fixed Width and Fixed Height boxes.
10. Build > Create > Apps
11. Edit the Console that you are using
12. Scroll all the way down to Choose Console Components and add MiniScorecard
13. Click Save
14. Once you're back in your Console, you will now see the Mini Scorecard tab on the bottom right corner