To fully customize your budget, you can delete any of the "Budget Groups" (except the Debt group), rename existing groups, and add new groups from everydollar.com. Unfortunately at this time budget groups cannot be deleted from the EveryDollar app.
From everydollar.com:
1. To delete a group, first click on the name of the budget group you'd like to delete.
2. Once you click on the budget group name, you should see a "Delete Group" option to the right.
3. Click "Delete Group", and a confirmation box will pop up to confirm. Click "Delete" and the budget group will be deleted.
*Note: Any budget items inside the budget group will also be deleted, and any tracked transactions will revert to the "New" column of your Transactions Queue.