1. Go to the Dashboard you want the Data Source to be changed.
2. Tap “Edit”
3. Tap “Dashboard Settings”
4. In “Dashboard Settings” tap “Change Data Sources
5. You’ll see the next screen.
6. Tapping on one will give you the option to change a used Data Source or to add new ones by tapping in the + symbol.
7. If you choose to add a new one the next screen will appear giving you more options to select.
I hope this helps.
Should you have further questions please post your questions in the General Forum.