Create your own sub-category by following these steps:
- select ‘Bank Transactions’ from the main menu
- select a bank account
- choose a transaction and click within the 'Category' field
- select the appropriate 'parent category' to open the sub-menu
- select 'Customise Categories' at the bottom of the sub-menu
- select 'New Category' to enter the name of your new category
- click 'Done' to save