Go to More, tap Customers and suppliers and open the individual or business you want to change.
Tap Edit.
Make your changes and tap Save.
Deleting a customer or supplier
If you haven’t recorded a transaction for a customer or supplier, you can delete them. This means you retain a record of past transactions, even after you no longer do business with a customer or supplier.
Go to More, tap Customers and suppliers and open the individual or business you want to delete.
Tap Edit.
Scroll to the bottom and tap Delete.