Double Click on the name of a Category or Account code you wish to edit. These are below the "Account Description" Heading. Note a cursor will appear showing you are now in edit mode. Account Codes are edited in a similar manner. To save your edits click outside of the description or hit Enter on your keyboard.

Double click on the cell for an Account Code Value which is also located under the "Draft Budget" Heading. To save your edits click outside of the description or hit Enter on your keyboard.