Item Modification

Item modification is recruitment At the time Billing If any emergency Change In the product or any of service material. Also All the system Should be controlled by the keyboard. For example If I am generating any of invoice or Quotation then I have added item Once I press enter key it automatically jump to the quantity rates And the total amount Otherwise we have to use a mouse To move To the next column. As the columns are made it should Jump once we have entered to the next column So for that can I make the changes.