To edit a budget, go to "Financials > "Budget" in the left menu. Then click on the "Manage budget" tab.
To edit the existing budget, you can go into it so it appears below. Then click on "Download budget".
When you have chosen which format and what you wish to change, click "Download".
Once you have downloaded the budget, you can edit it directly in the file. Here, you can change both at the account and interval levels.
To upload the edited budget, click "Upload budget file".
Now, the budget has been uploaded and is active.