1. Open the App overview screen by clicking on the navigation dropdown on the toolbar at the top.
2. Create a new sheet or open an existing one.

3. Enter the edit mode by clicking on the  button.
4. Click on the object pane button () and double-click on the  button. The chart will be added to the main content area automatically.
5. Type Geo in the search box of the asset panel on the left of your screen. While there are no charts called Geo, the search has flagged up our two tagged dimensions in the master library pane with a yellow circle.
6. Drag the Area field to where it says Add dimension. Repeat the steps where the Country field selects Add "Country" when prompted, as shown in the following screenshot:

7. Clear your search on Geo by pressing the  button.
8. Click on Measures.

9. Drag the Sales measure from the asset panel over to the add measure area of
   the chart. Voila! You have created your first visualization using Master dimensions and measures:

10. You can now drag this chart into the asset panel and it will become a
    master visualization.