You have created a budget template for your organization and you want to modify it. Find out how to do it in this article.
If you don't know how to create a budget template, please read our article How to create one or several budget template for my organization?
In your organization dashboard, go to "MANAGE", then click on "Budget templates".
Drag the navigation bar to the right until the end of table. Click on the option button on the line of the budget template you want to modify, then select "Edit".
Make all the changes and save.