You may have a report already in a Bundle that you wish to add a Scenario to the existing budget. The quickest way to do this is by bulk update from the Options Menu:
Navigate to Reports > Bundles > Choose your Bundle
Tick the boxes of the Reports in the Bundle that you wish to update
Click the OPTIONS Menu > Configure
To the right of the Budget Version > Click the Scenario drop down
Tick the box of the Scenario to be included
APPLY CHANGES and Run the Bundle to review
This change can also be made in the individual report by clicking CONFIGURE
This will take you to the Report Builder Screen
Data Source > Budget Version
Click Scenario dropdown to select by ticking the box
Refresh Report
Once you are happy, SAVE at the top right to update the Bundle