1. Go to Gateway of Tally > Accounts Info > Scenario > Alter
2. Select the scenario to alter from the List of Scenarios
The information given while creating the scenario displays and you can alter it.
Exclude
Use the Alter mode when you do not want a selected included voucher to affect the scenario, anymore. It is easier to put the selected voucher in the Exclude List, rather than to remove it from the Include List.